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112-604: San Diego County ( / ˌ s æ n d i ˈ eɪ ɡ oʊ / ), officially the County of San Diego , is a county in the southwest corner of the U.S. state of California . As of the 2020 census , the population was 3,298,634; it is the second-most populous county in California and the fifth-most populous in the United States. Its county seat is San Diego , the second-most populous city in California and

224-516: A National Hockey League (NHL) franchise, though it hosted the San Diego Mariners of the now-defunct World Hockey Association (WHA) from 1974 to 1977. Currently, there is no NFL, NBA, or NHL team in the county. San Diego is the largest American city not to have won a championship in a "Big Four" major professional league. The city does have one major league title to its name: the 1963 American Football League (AFL) Championship won by

336-1054: A city , town , or village . A few counties directly provide public transportation themselves, usually in the form of a simple bus system. However, in most counties, public transportation is provided by one of the following: a special district that is coterminous with the county (but exists separately from the county government), a multi-county regional transit authority, or a state agency. In western and southern states, more populated counties provide many facilities, such as airports, convention centers , museums, recreation centers , beaches, harbors, zoos, clinics, law libraries , and public housing . They provide services such as child and family services, elder services, mental health services, welfare services, veterans assistance services, animal control , probation supervision, historic preservation, food safety regulation, and environmental health services. They have many additional officials like public defenders , arts commissioners, human rights commissioners, and planning commissioners. There may be

448-446: A consolidated city-county or independent city exists, a city council usually governs city/county or city affairs. In some counties, day-to-day operations are overseen by an elected county executive or by a chief administrative officer or county administrator who reports to the board, the mayor, or both. In many states, the board in charge of a county holds powers that transcend all three traditional branches of government. It has

560-571: A 6% decrease from 2017. 3,586 were sheltered, and 4,990 were not. 4,912 (75.3%) were in the city of San Diego. North County Inland had 1,153 (13.4%), North County Coastal with 822 homeless (9.6%), 602 (7%) were found in South County, and 1,087 (12.7%) in East County. According to a 2014 Pew Research Center survey, 68% of adults in the county were Christian , of whom 32% were Catholic . 27% were religiously unaffiliated , and 5% adhered to

672-424: A county fire department and a county police department – as distinguished from fire and police departments operated by individual cities, special districts, or the state government. For example, Gwinnett County, Georgia , and its county seat, the city of Lawrenceville , each have their own police departments. (A separate county sheriff's department is responsible for security of the county courts and administration of

784-707: A destination for trafficked minors from Mexico and the Philippines. In 2018, the United States Border Patrol caught an average of over a hundred individuals crossing the border illegally each day. San Diego County and Imperial County are part of the Southern Border Region , one of nine such regions. As a regional economy, the Southern Border Region is the smallest but most economically diverse region in

896-410: A female householder with no husband present, and 33.3% were non-families. 24.2% of all households were made up of individuals, and 7.9% had someone living alone who was 65 years of age or older. The average household size was 2.73 and the average family size was 3.29. As of 2000, 25.7% of the population was under the age of 18, 11.30% was from 18 to 24, 32.0% from 25 to 44, 19.8% from 45 to 64, and 11.2%

1008-465: A few counties bear names of Native American , French, or Spanish origin. Counties are most often named for people, often political figures or early settlers, with over 2,100 of the 3,144 total so named. The most common county name, with 31, is Washington County , for America's first president, George Washington . Up until 1871, there was a Washington County within the District of Columbia , but it

1120-400: A land area of 20,057 square miles (51,947 km ). The least extensive county is Kalawao County, Hawaii , with a land area of 11.991 square miles (31.058 km ). The least extensive county equivalent in the 50 states is the independent city of Falls Church, Virginia , with a land area of 1.999 square miles (5.177 km ). If U.S. territories are included,

1232-453: A large number of counties, and many Western states were sparsely populated when counties were created by their respective state legislatures. The five counties of Rhode Island and eight of the 14 counties of Massachusetts no longer have functional county governments, but continue to exist as legal and census entities. Connecticut abolished county governments in 1960, leaving its eight counties as mere legal and census entities. In 2022,

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1344-888: A matter of U.S. state law , so the specific governmental powers of counties may vary widely between the states, with many providing some level of services to civil townships , municipalities , and unincorporated areas . Certain municipalities are in multiple counties ; New York City is uniquely partitioned into five counties, referred to at the city government level as boroughs . Some municipalities have been consolidated with their county government to form consolidated city-counties , or have been legally separated from counties altogether to form independent cities . Conversely, counties in Connecticut and Rhode Island , eight of Massachusetts's 14 counties , and Alaska's Unorganized Borough have no government power, existing only as geographic distinctions. The United States Census Bureau uses

1456-483: A non-Christian faith. According to the University of Southern California , in 2010, the largest faith in the county was Catholicism, followed by non-denominational Christians , and Mormons . In 2014, the county had 978 religious organizations, the seventh most out of all US counties. In 2014 according to Pew Research Center , there are about 170,000 undocumented immigrants living in the region. San Diego has been

1568-415: A population over 100,000; 137 counties have a population over 500,000; 45 counties have a population over 1,000,000; and 14 counties have a population over 2,000,000. At the other extreme, 35 counties have a population under 1,000; 307 counties have a population under 5,000; 709 counties have a population under 10,000; and 1,492 counties have a population between 10,000 and 50,000. At the 2000 U.S. Census ,

1680-468: A thriving musical and theatrical scene, numerous notable special events, a varied cuisine, and a reputation as one of America's premier centers of craft brewing . Sports in San Diego County includes major professional league teams, other highest-level professional league teams, minor league teams, and college athletics . San Diego County hosts two teams of the major professional leagues,

1792-570: A varied topography. On its western side is more than 70 miles (113 km) of coastline. Most of San Diego between the coast and the Laguna Mountains consists of hills, mesas , and small canyons . Snow-capped (in winter) mountains rise to the east, with the Sonoran Desert farther to the east. The Cleveland National Forest is spread across the central portion of the county, while Anza-Borrego Desert State Park occupies most of

1904-526: A year. Most rainfall occurs from November to April. Winter temperatures are mild, with average high temperatures of 66–70 °F (19–21 °C) and lows of 50–56 °F (10–13 °C). The climate in the San Diego area, like much of California, often varies significantly over short geographical distances resulting in microclimates . In San Diego's case this is mainly due to the city's topography (the Bay, and

2016-428: Is Lake . Words from Native American languages, as well as the names of Native American leaders and tribes, lend their names to many counties. Quite a few counties bear names of French or Spanish origin, such as Marquette County being named after French missionary Father Jacques Marquette . The county's equivalent in the state of Louisiana, the parish (Fr. paroisse civile and Sp. parroquia ) took its name during

2128-572: Is 343 sq mi (890 km ), whereas in Utah it is 2,427 sq mi (6,290 km ). The most extensive county or county equivalent is the Yukon–Koyukuk Census Area, Alaska , with a land area of 145,505 square miles (376,856 km ). All nine of the most extensive county equivalents are in Alaska. The most extensive county is San Bernardino County, California , with

2240-433: Is a record of past tsunamis . In the 1847 census of San Diego County ordered by Richard Barnes Mason , it found that 2,287 people lived in the county, to include Native Americans, Pacific Islanders, and African Americans. Since at least 2014, San Diego County is the fifth most populous county in the United States. In 2000, only about 3% of San Diego County residents left the county for work while 40,000 people commuted into

2352-562: Is a triangle from a first point on the northern edge of Carlsbad, a second point southeast of Escondido , and a third point on the southern edge of La Jolla . It contains all or most of the cities of Carlsbad, Encinitas, Solana Beach , Del Mar , and Poway in addition to a substantial portion of northern San Diego. According to a point-in-time count taken for the San Diego Regional Task Force on Homelessness, there were 8,576 homeless individuals on January 6, 2018,

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2464-435: Is an administrative or political subdivision of a U.S. state or other territories of the United States which consists of a geographic area with specific boundaries and usually some level of governmental authority. The term " county " is used in 48 states, while Louisiana and Alaska have functionally equivalent subdivisions called parishes and boroughs , respectively. Counties and other local governments exist as

2576-403: Is an unusual case because it encompasses multiple entire counties in one city. Each of those counties is coextensive with one of the five boroughs of the city: Manhattan (New York County), The Bronx (Bronx County), Queens (Queens County), Brooklyn (Kings County), and Staten Island (Richmond County). San Diego Presidio The presidio was the first permanent European settlement on

2688-500: Is either done at the state level or at the municipal level. In Connecticut and parts of Massachusetts, regional councils have been established to partially fill the void left behind by the abolished county governments. The regional councils' authority is limited compared with a county government—they have authority only over infrastructure and land use planning, distribution of state and federal funds for infrastructure projects, emergency preparedness, and limited law enforcement duties. In

2800-492: Is greater in the higher elevations of San Diego. Some of the higher areas of San Diego, such as Palomar Mountain and the Laguna Mountains , receive 20–40 inches (51–102 cm) of rain per year, supporting lush forests similar to the Sierra Nevada and California Coast Range . The Colorado Desert portion of the county lies to the east of the mountains, which receives the least amount of precipitation; Borrego Springs,

2912-399: Is greater than the populations of 41 U.S. states, and is only slightly smaller than the combined population of the 10 least populous states and Washington, D.C. It also makes the population of Los Angeles County 17.4 times greater than that of the least populous state, Wyoming. The second most populous county is Cook County, Illinois , with a population of 5,275,541. Cook County's population

3024-455: Is larger than that of 28 individual U.S. states and the combined populations of the six smallest states. The least populous county is Loving County, Texas , with 64 residents in 2020. Eight county equivalents in the U.S. territories have no human population: Rose Atoll , Northern Islands Municipality , Baker Island , Howland Island , Jarvis Island , Johnston Atoll , Kingman Reef , and Navassa Island . The remaining three islands in

3136-719: Is no formal level of government (municipality, public education, or otherwise) existing below that of the county in the state. In most Midwestern and Northeastern states, counties are further subdivided into townships or towns , which sometimes exercise local powers or administration. Throughout the United States, counties may contain other independent, self-governing municipalities . In New England, counties function at most as judicial court districts and sheriff's departments (presently, in Connecticut only as judicial court districts—and in Rhode Island , they have lost both those functions and most others but they are still used by

3248-576: Is now San Diego County has been inhabited for more than 12,000 years by the Kumeyaay (also known as 'Iipai-Tiipai or by the historical Spanish name Diegueño), Luiseño , Cupeño , Cahuilla , and the Acjachemen people and their local predecessors. In 1542, the explorer Juan Rodríguez Cabrillo , who may have been born in Portugal but sailed under the flag of Castile , claimed San Diego Bay for

3360-410: Is rarely a county responsibility, execution of capital punishment is never a county responsibility, and the state's responses to prisoners' appeals are the responsibility of the state attorney general , who has to defend before the state appellate courts the prosecutions conducted by locally elected district attorneys in the name of the state. Furthermore, county-level trial court judges are officers of

3472-562: Is simultaneously a city, which is a municipality (municipal corporation), and a county, which is an administrative division of a state, having the powers and responsibilities of both types of entities. The city limit or jurisdiction is synonymous with the county line, as the two administrative entities become a non-dichotomous single entity. For this reason, a consolidated city-county is officially remarked as name of city – name of county (i.e., Augusta–Richmond County in Georgia). The same

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3584-521: Is the 17th most populous metropolitan statistical area and the 18th most populous primary statistical area in the United States. San Diego County is also part of the San Diego–Tijuana region, the largest metropolitan area shared between the United States and Mexico. From north to south, San Diego County extends from the southern borders of Orange and Riverside Counties to the Mexico–U.S. border and

3696-506: Is true of the boroughs of New York City , each of which is coextensive with a county of New York State. For those entities in which the city uses the same name as the county, city and county of name may be used (i.e., City and County of Denver in Colorado). Similarly, some of Alaska 's boroughs have merged with their principal cities, creating unified city-boroughs. Some such consolidations and mergers have created cities that rank among

3808-652: The Alaska Constitutional Convention wanted to avoid the traditional county system and adopted their own unique model with different types of boroughs varying in powers and duties. In some states, these powers are partly or mostly devolved to the counties' smaller divisions usually called townships , though in New York, New England and Wisconsin they are called "towns". The county may or may not be able to override its townships on certain matters, depending on state law. The newest county in

3920-458: The City and County of Philadelphia, Pennsylvania ; City and County of San Francisco, California ; and Lynchburg-Moore County, Tennessee A consolidated city-county may still contain independent municipalities maintaining some governmental powers that did not merge with the rest of the county. For example, the government of Jacksonville–Duval County, Florida , still provides county-level services to

4032-603: The Mid-Atlantic and Midwest , counties typically provide, at a minimum, courts, public utilities , libraries, hospitals, public health services, parks, roads, law enforcement, and jails. There is usually a county registrar, recorder, or clerk (the exact title varies) who collects vital statistics , holds elections (sometimes in coordination with a separate elections office or commission), and prepares or processes certificates of births, deaths, marriages, and dissolutions (divorce decrees). The county recorder normally maintains

4144-854: The National Football League (NFL)'s San Diego Chargers from 1961 to 2017, when the team relocated to the Greater Los Angeles area (now the Los Angeles Chargers ). The county also hosted the National Basketball Association (NBA)'s San Diego Rockets from 1967 to 1971 (now the Houston Rockets ) and San Diego Clippers from 1978 to 1984 (now the Los Angeles Clippers ). San Diego County has never hosted

4256-566: The New York City Borough of Manhattan), with 72,033 persons per square mile (27,812 persons/km ) in 2015. The Yukon–Koyukuk Census Area, Alaska , is both the most extensive and the least densely populated county or county equivalent with 0.0380 persons per square mile (0.0147 persons/km ) in 2015. In the 50 states (plus the District of Columbia), a total of 981 counties have a population over 50,000; 592 counties have

4368-578: The Pacific coast of the present-day United States. As the first of the presidios and Spanish missions in California , it was the base of operations for the Spanish colonization of California. The associated Mission San Diego de Alcalá later moved a few miles away. Essentially abandoned by 1835, the site of the original Presidio lies on a hill within present-day Presidio Park , although no historic structures remain above ground. The San Diego Presidio

4480-535: The Peninsular Ranges for hiking, biking, mountainboarding and trail riding . Surfing locations include Swami's , Stone Steps Beach, Torrey Pines State Beach , Cardiff State Beach , San Onofre State Beach and the southern portion of Black's Beach . The region is host to the second largest cruise ship industry in California which generates an estimated $ 2 million annually from purchases of food, fuel, supplies, and maintenance services. In 2008,

4592-507: The Port of San Diego hosted 252 ship calls and more than 800,000 passengers. The culture of San Diego is influenced heavily by American and Mexican cultures due to its position as a border town , its large Hispanic population, and its history as part of Spanish America and Mexico . The area's longtime association with the U.S. military also contributes to its culture. Present-day culture includes many historical and tourist attractions,

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4704-576: The Province of Maine founded York County . Massachusetts followed in 1643. Pennsylvania and New York delegated significant power and responsibility from the colony government to county governments and thereby established a pattern for most of the United States, although counties remained relatively weak in New England . When independence came, the framers of the Constitution left

4816-600: The San Diego Padres of Major League Baseball (MLB) and San Diego FC of Major League Soccer (MLS). The county is home to several universities whose teams compete in various NCAA Division I sports, most notably the San Diego State Aztecs . The Farmers Insurance Open , a professional golf tournament on the PGA Tour , is played annually at Torrey Pines Golf Course . San Diego County hosted

4928-576: The South Bay or South County, including South San Diego , an exclave of the city of San Diego which has no land connection to the rest of the city. San Diego County is bordered on the northwest by Orange County , on the north by Riverside County ; on the east by Imperial County ; on the south by Mexico ; and on the west by the Pacific Ocean. Under the Köppen climate classification system,

5040-571: The Spanish Empire , and he named the site San Miguel. In November 1602, Sebastián Vizcaíno surveyed the harbor and what are now Mission Bay and Point Loma and named the area for Saint Didacus , a Spaniard more commonly known as San Diego. European settlement in what is now San Diego County began with the founding of the San Diego Presidio and Mission San Diego de Alcalá by Spanish soldiers and clerics in 1769. This county

5152-437: The U.S. Minor Outlying Islands ( Midway Atoll , Palmyra Atoll and Wake Island ) have small non-permanent human populations. The county equivalent with the smallest non-zero population counted in the census is Swains Island, American Samoa (17 people), although since 2008 this population has not been permanent either. The most densely populated county or county equivalent is New York County, New York (coextensive with

5264-582: The USGS counts Guam's election districts (villages) as county equivalents. The U.S. Census Bureau counts the 3 main islands in the U.S. Virgin Islands as county equivalents, while the USGS counts the districts of the U.S. Virgin Islands (of which there are 2) as county equivalents. Common sources of county names are names of people, geographic features, places in other states or countries, and animals. Quite

5376-689: The United States Census Bureau and some other federal agencies for some federal functions), and most of the governmental authority below the state level is in the hands of towns and cities . In several of Maine's sparsely populated counties, small towns rely on the county for law enforcement, and in New Hampshire several social programs are administered at the state level. In Connecticut, Rhode Island, and parts of Massachusetts, counties are now only geographic designations, and they do not have any governmental powers. All government

5488-471: The county seat ("parish seat" in Louisiana, "borough seat" in Alaska, or " shire town " in several New England counties). The county seat usually resides in a municipality. However, some counties may have multiple seats or no seat. In some counties with no incorporated municipalities, a large settlement may serve as the county seat. The power of county governments varies widely from state to state, as does

5600-518: The eighth-most populous in the United States. It is the southwesternmost county in the 48 contiguous United States , and is a border county . It is home to 18 Indian reservations , the most of any county in the United States. There are 16 military installations of the U.S. Navy , Marine Corps , and Coast Guard in the county. San Diego County comprises the San Diego–Chula Vista–Carlsbad, CA metropolitan statistical area , which

5712-478: The median land area of U.S. counties was 622 sq mi (1,610 km ), which is two-thirds of the median land area of a ceremonial county of England , and a little more than a quarter of the median land area of a French département . Counties in the western United States typically have a much larger land area than those in the eastern United States. For example, the median land area of counties in Georgia

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5824-508: The municipalities of Tijuana and Tecate in Baja California . From west to east, San Diego County stretches from the Pacific Ocean to its boundary with Imperial County , which separated from it in 1907. San Diego County has more than 70 miles (113 km) of coastline. This forms the most densely populated region of the county, which has a mild Mediterranean to semiarid climate and extensive chaparral vegetation, similar to

5936-451: The 50 states and District of Columbia. There are an additional 100 county equivalents in the territories of the United States . The average number of counties per state is 62, with a range from the three counties of Delaware to the 254 counties of Texas . Southern and Midwestern states generally tend to have more counties than Western or Northeastern states, as many Northeastern states are not large enough in area to warrant

6048-461: The 50 states and the District of Columbia. If the 100 county equivalents in the U.S. territories are counted, then the total is 3,244 counties and county-equivalents in the United States. The idea of counties originated with the counties of England . English (after 1707, British ) colonists brought to their colonies in North America a political subdivision that they already used in

6160-997: The British metropole : the counties. Counties were among the earliest units of local government established in the Thirteen Colonies that would become the United States. Virginia created the first counties in order to ease the administrative workload in Jamestown . The House of Burgesses divided the colony first into four "incorporations" in 1617 and finally into eight shires (or counties) in 1634: James City , Henrico , Charles City , Charles River , Warrosquyoake , Accomac , Elizabeth City , and Warwick River . America's oldest intact county court records can be found at Eastville, Virginia , in Northampton (originally Accomac) County , dating to 1632. Maryland established its first county, St. Mary's in 1637. In 1639,

6272-510: The Census Bureau estimates there were 3,343,364 people, 1,067,846 households, and 663,449 families residing in the county. The population density was 670 inhabitants per square mile (260/km). There were 1,142,245 housing units at an average density of 248 per square mile (96/km). In 2000, there were 994,677 households, out of which 33.9% had children under the age of 18 living with them, 50.7% were married couples living together, 11.6% had

6384-476: The Colorado Desert, has an average January low of 43 °F (6 °C) and August high of 106 °F (41 °C). Rainfall along the coast averages about 10 inches (25 cm) of precipitation annually, which occurs mainly during the cooler months of December through April. Though there are few wet days per month during the rainy period, rainfall can be heavy when it does occur. However, the rainfall

6496-495: The Pacific Ocean to the Colorado River , and it no longer covered the entire border between California and Mexico. According to the U.S. Census Bureau , the county has an area of 4,526 square miles (11,720 km), of which 4,207 square miles (10,900 km) is land and 319 square miles (830 km) (7.0%) is water. The county is larger in area than the combined states of Rhode Island and Delaware. San Diego County has

6608-628: The San Diego Chargers, when the AFL was an independent entity prior to the AFL–NFL merger in 1970. Due to its lackluster record on winning professional championships, and in some cases retaining professional teams, some San Diego sports fans believe there is a curse on professional sports in the city. County (United States) In the United States , a county or county equivalent

6720-799: The San Diego Museum of Art , Fleet Science Center , San Diego Natural History Museum , USS Midway Museum , and the San Diego Air & Space Museum . Historical places such as the Gaslamp Quarter , Balboa Park and Old Town San Diego State Historic Park . Wildlife refuges, zoos, and aquariums such as the San Diego Zoo , San Diego Zoo Safari Park , Birch Aquarium , and the San Diego-La Jolla Underwater Park . Outdoor destinations include

6832-655: The U.S. Census Bureau began to also count Connecticut's Councils of Governments , which took over some of the regional powers from the state's former county governments, as county equivalents. Territories of the United States do not have counties; instead, the United States Census Bureau also divides them into county equivalents. The U.S. Census Bureau counts American Samoa 's districts and atolls as county equivalents. American Samoa locally has places called "counties", but these entities are considered to be " minor civil divisions " (not true counties) by

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6944-473: The U.S. Census Bureau recognized the state's nine Councils of Governments as replacement for the state's eight legacy counties for all statistical purposes; full implementation was completed in 2024. The average U.S. county population was 104,435 in 2019, while the median county, which is Nicholas County, West Virginia , had a population of 25,965 in 2019. The most populous county is Los Angeles County, California , with 10,014,009 residents in 2020. This number

7056-479: The U.S. Census Bureau treats American Samoa's three districts and two atolls as county equivalents). American Samoa's counties are treated as minor civil divisions. Most territories are directly divided into municipalities or similar units, which are treated as equivalent of counties for statistical purposes: The U.S. Census Bureau counts all of Guam as one county equivalent (with the FIPS code 66010), while

7168-627: The U.S. Census Bureau. The number of counties per state ranges from the three counties of Delaware to the 254 counties of Texas . County populations also vary widely: in 2017, according to the Census Bureau, more than half the U.S. population was concentrated in just 143 of the more than 3,000 counties, or just 4.6% of all counties; the five most populous counties, ordered from most to least, are Los Angeles County, California ; Cook County, Illinois ; Harris County, Texas ; Maricopa County, Arizona ; and San Diego County, California . As of 2022 , there are 3,144 counties and county-equivalents in

7280-489: The United States is the city and county of Broomfield, Colorado , established in 2001 as a consolidated city-county , previously part of four counties. The newest county equivalents are the Alaskan census areas of Chugach and Copper River , both established in 2019, and the Alaskan boroughs of Petersburg established in 2013, Wrangell established in 2008, and Skagway established in 2007. A consolidated city-county

7392-653: The area has been subject to wildfires that force thousands to evacuate. The most recent are the December 2017 Lilac Fire , the May 2014 San Diego County wildfires , the Witch Creek Fire in 2007, and the Cedar Fire in 2003. California defines a fire season in which fires are most likely to occur, usually between late July and late October (which are the driest months of the area). Signs posted in numerous spots of

7504-615: The attack, the Spaniards built a stockade which was finished in March 1770. It included two bronze cannons: one pointed to the bay, the other to the nearby Indian village. In 1773 and 1774, adobe structures were built to replace the temporary wood and brush huts. Later in 1774, the mission was moved a few miles up Mission Valley to separate the Kumeyaay from the influence of the presidial garrison. By 1783, there were 54 troops stationed at

7616-402: The board. These positions may include county clerk , county treasurer , county surrogate, sheriff , and others. District attorneys or state attorneys are usually state-level as opposed to county-level officials, but in many states, counties and state judicial districts have coterminous boundaries. The site of a county's administration, and often the county courthouse , is generally called

7728-410: The city and the county at least nominally exist, they are properly classified as counties in their own right. Likewise, the boroughs of New York City are coextensive with counties and are therefore by definition also not county equivalents. There are technically no counties in U.S. territories. American Samoa has its own counties , but the U.S. Census Bureau does not treat them as counties (instead,

7840-874: The collection of the San Diego Historical Society (now the San Diego History Center). Serra Museum is sometimes incorrectly referred to as the Presidio, but in fact nothing remains of the original Presidio. Marston donated the park and museum to the city in 1929. Presidio Park is still owned by the city of San Diego; the Serra Museum is managed by the San Diego History Center. No historical structures remain in Presidio Park today. The Presidio site

7952-421: The county (which merely implements state law). A typical criminal defendant will be arraigned and subsequently indicted or held over for trial before a trial court in and for a particular county where the crime occurred, kept in the county jail (if he is not granted bail or cannot make bail), prosecuted by the county's district attorney, and tried before a jury selected from that county. But long-term incarceration

8064-463: The county jail.) In several southern states, public school systems are organized and administered at the county level. As of 2024 , there were 2,999 counties, 64 Louisiana parishes , 19 organized boroughs and 11 census areas in Alaska, 9 Councils of Government in Connecticut, 41 independent cities , and the District of Columbia for a total of 3,144 counties and county equivalents in

8176-595: The county provide information on the level of threats from fires based on weather conditions. Northern San Diego County is known as North County ; the eastern suburbs are collectively known as East County ; the rural areas located further east and extending to the Imperial County line are known as the Mountain Empire ; and the southern suburbs, extending to the Mexican border, are collectively known as

8288-542: The early 20th century, San Diego County had a thriving wine industry ; however the 1916 Charles Hatfield flood was the beginning of the end of the industry which included the destruction of the Daneri winery in Otay Valley . As of October 2016, there are roughly one hundred vineyards and wineries in San Diego County. By the 2019–2020 statistical survey, California Department of Food & Agriculture (cdfa) found that

8400-567: The foot of Presidio Hill. In 1907, George Marston , a wealthy department store owner, bought Presidio Hill with an interest to preserve the site. Unable to attract public funding, Marston built a private park in 1925 with the help of architect John Nolen . He also funded the Junípero Serra Museum , designed by William Templeton Johnson and built in 1928–1929 in Spanish Revival style architecture, to house and showcase

8512-399: The four independent municipalities within its borders: Atlantic Beach , Baldwin , Jacksonville Beach , and Neptune Beach . The term county equivalents is used by the United States Census Bureau to describe divisions that are comparable to counties but called by different names: Consolidated city-counties are not designated county equivalents for administrative purposes; since both

8624-461: The general law of the state or by a charter specific to that county. States may allow only general-law counties, only charter counties, or both. Generally, general-law local governments have less autonomy than chartered local governments. Counties are usually governed by an elected body, variously called the county commission , board of supervisors , commissioners' court , county council , county court , or county legislature . In cases in which

8736-626: The geographically largest cities in the world, though often with population densities far below those of most urban areas. There are 40 consolidated city-counties in the U.S., including Augusta–Richmond County; the City and County of Denver, Colorado; the City and County of Honolulu, Hawaii ; Indianapolis–Marion County, Indiana ; Jacksonville–Duval County, Florida ; Louisville–Jefferson County, Kentucky ; Lexington–Fayette County, Kentucky ; Kansas City–Wyandotte County, Kansas ; Nashville–Davidson County, Tennessee ; New Orleans–Orleans Parish, Louisiana ;

8848-405: The judicial branch of the state government rather than county governments. In many states, the county controls all unincorporated lands within its boundaries. In states with a township tier, unincorporated land is controlled by the townships. Residents of unincorporated land who are dissatisfied with county-level or township-level resource allocation decisions can attempt to vote to incorporate as

8960-810: The largest population center in the desert, averages only 5 inches (13 cm), with a high evaporation rate. There are seven official wilderness areas in San Diego County that are part of the National Wilderness Preservation System (NWPS). Four of these are integral parts of Cleveland National Forest, whereas three are managed by the Bureau of Land Management (BLM). Some of these extend into neighboring counties (as indicated below): There are 236 mountain summits and peaks in San Diego County including: More than 1,700 tons of radioactive waste are stored at San Onofre Nuclear Generating Station , which sits in an area where there

9072-415: The later part of the 19th century, there were numerous changes in the boundaries of San Diego County, when various areas were separated to make up the counties mentioned above. The most recent changes were the establishments of Riverside County in 1893 and Imperial County in 1907. Imperial County was also the last county to be established in California, and after this division, San Diego no longer extended from

9184-560: The least extensive county equivalent is Kingman Reef , with a land area of 0.01 square miles (0.03 km ). In some states, a municipality may be in only one county and may not annex territory in adjacent counties, but in the majority of states, the state constitution or state law allows municipalities to extend across county boundaries. At least 32 states include municipalities in multiple counties . Dallas , for example, contains portions of five counties, while numerous other cities comprise portions of four counties. New York City

9296-416: The legislative power to enact laws for the county; it has the executive power to oversee the executive operations of county government; and it has quasi-judicial power with regard to certain limited matters (such as hearing appeals from the planning commission if one exists). In many states, several important officials are elected separately from the board of commissioners or supervisors and cannot be fired by

9408-686: The matter to the states. Subsequently, state constitutions conceptualized county governments as arms of the state. Louisiana instead adopted the local divisions called parishes that dated back to both the Spanish colonial and French colonial periods when the land was dominated by the Catholic Church . In the twentieth century, the role of local governments strengthened and counties began providing more services, acquiring home rule and county commissions to pass local ordinances pertaining to their unincorporated areas . In 1955, delegates to

9520-465: The median home price was $ 583,000; this is lower than the median home price in Los Angeles, and Orange counties. According to the 2000 census, the median income for a household in the county was $ 47,067, and the median income for a family was $ 53,438. Males had a median income of $ 36,952 versus $ 30,356 for females. The per capita income for the county was $ 22,926. About 8.9% of families and 12.4% of

9632-557: The metropolitan area. ' The 2010 United States census reported that San Diego County had a population of 3,095,313. The racial makeup of San Diego County was 1,981,442 (64.0%) White , 158,213 (5.1%) African American , 26,340 (0.9%) Native American , 336,091 (10.9%) Asian (4.7% Filipino, 1.6% Vietnamese, 1.4% Chinese, 3.2% Other Asian), 15,337 (0.5%) Pacific Islander , 419,465 (13.6%) from other races , and 158,425 (5.0%) from two or more races. Hispanic or Latino of any race were 991,348 people (32.0%). Including those of mixed race,

9744-521: The next most common source of county names are geographic features and locations, with some counties even being named after counties in other states, or for places in other countries, such as the United Kingdom (the latter is most common in the area of the original Thirteen Colonies in the case of the United Kingdom, or in places which had a large number of immigrants from a particular area for other countries). The most common geographic county name

9856-399: The northeast. Although the county's western third is primarily urban, the mountains and deserts in the eastern two-thirds are primarily undeveloped backcountry . Most of these backcountry areas are home to a native plant community known as chaparral . San Diego County contains more than 1,000,000 acres (4,000 km) of chaparral, twice as much as any other California county. Periodically

9968-524: The numerous hills, mountains, and canyons). Frequently, particularly during the "May gray/ June gloom " period, a thick marine layer will keep the air cool and damp within a few miles of the coast, but will yield to bright cloudless sunshine approximately 5–10 miles (8.0–16.1 km) inland. This happens every year in May and June. Even in the absence of June gloom, inland areas tend to experience much more significant temperature variations than coastal areas, where

10080-546: The nursery trade dominated the county's agriculture by dollar value. Second place went to avocado production. The county has been called "the Craft Beer Capital of America". Brewing has been one of the fastest-growing business sectors with local breweries ranking among the 50 largest craft brewers in the United States and breweries that are consistently rated among the top breweries in the world. Commercial operations to grow, test, or sell cannabis are not allowed in

10192-493: The ocean serves as a moderating influence. Thus, for example, downtown San Diego averages January lows of 48 °F (9 °C) and August highs of 77 °F (25 °C). The city of El Cajon, just 10 miles (16 km) northeast of downtown San Diego, averages January lows of 42 °F (6 °C) and August highs of 89 °F (32 °C). Julian, in the mountains, has an average January low of 29 °F (−2 °C) and August high of 85 °F (29 °C). Borrego Springs, in

10304-424: The official record of all real estate transactions. Other key county officials include the coroner / medical examiner , treasurer , assessor , auditor , comptroller , and district attorney . In most states, the county sheriff is the chief law enforcement officer in the county. However, except in major emergencies where clear chains of command are essential, the county sheriff normally does not directly control

10416-448: The police departments of city governments, but merely cooperates with them (e.g., under mutual aid pacts). Thus, the most common interaction between county and city law enforcement personnel is when city police officers deliver suspects to sheriff's deputies for detention or incarceration in the county jail. In most states, the state courts and local law enforcement are organized and implemented along county boundaries, but nearly all of

10528-435: The population were below the poverty line, including 16.5% of those under age 18 and 6.8% of those age 65 or over. Much of the county's high-income residents are concentrated in the northern part of the city of San Diego. The San Diego metropolitan area has two places with both a population of over 50,000 and a per capita income of over $ 40,000: Carlsbad and Encinitas . The county's largest continuous high-income urban area

10640-412: The presidio. With Mexican independence in 1821, the presidio came under Mexican control, and was officially relinquished by the Spanish on April 20, 1822. From 1825–1829, it served as the Mexican governor's residence. The presidio was abandoned by 1835 and fell to ruins, because settlers preferred to live in the more accessible town—present-day Old Town San Diego State Historic Park —which developed at

10752-451: The region for a well rounded experience, everything from shopping to surfing as well as its mild climate. Its numerous tourist destinations include Westfield UTC , Seaport Village , and Fashion Valley for shopping. SeaWorld San Diego and Legoland California as amusement parks. Golf courses such as Torrey Pines Golf Course and Balboa Park Golf Course. Museums such as the Museum of Us ,

10864-582: The relationship between counties and incorporated cities. The powers of counties arise from state law and vary widely. In Connecticut and Rhode Island , counties are geographic entities, but not governmental jurisdictions. At the other extreme, Maryland counties and the county equivalent City of Baltimore handle almost all services, including public education , although the state retains an active oversight authority with many of these services. Counties in Hawaii also handle almost all services since there

10976-565: The rest of the western portion of Southern California. Precipitation and temperature extremes increase to the east, with mountains that receive frost and snow in the winter. These lushly forested mountains receive more rainfall than the average in Southern California, while the desert region of the county lies in a rain shadow to the east, which extends into the Desert Southwest region of North America. The area which

11088-569: The southernmost point of the port of San Diego, ensuring that the United States received all of the natural harbor of San Diego Bay. San Diego County was one of the original counties of California, created at the time of California statehood in 1850. At the time of its establishment in 1850, San Diego County was relatively large, and included all of southernmost California south and east of Los Angeles County . It included areas of what are now Inyo and San Bernardino Counties, as well as all of what are now Riverside and Imperial Counties. During

11200-556: The state's French and Spanish colonial periods. Before the Louisiana Purchase and granting of statehood, government was often administered in towns where major church parishes were located. Of the original 19 civil parishes of Louisiana that date from statehood in 1807, nine were named after the Roman Catholic parishes from which they were governed. The structure and powers of a county government may be defined by

11312-407: The state. However, the two counties maintain weak relations and have little in common aside from their common border. The region has a high cost of living . This includes the highest cost of water in the United States. As of 2018, San Diego County is within the top ten highest cost of rent in the United States; this has led to people moving out of the county. San Diego County's agriculture industry

11424-421: The substantive and procedural law adjudicated in state trial courts originates from the state legislature and state appellate courts. In other words, most criminal defendants are prosecuted for violations of state law, not local ordinances, and if they, the district attorney, or police seek reforms to the criminal justice system, they will usually have to direct their efforts towards the state legislature rather than

11536-399: The term "county equivalent" to describe places that are comparable to counties, but called by different names. Louisiana parishes, the organized boroughs of Alaska, independent cities, and the District of Columbia are equivalent to counties for administrative purposes. Alaska's Unorganized Borough is further divided into 11 census areas that are statistically equivalent to counties. In 2024,

11648-467: The total number of residents with Asian ancestry was 407,984. As of 2009, the racial makeup of the county was 79.4% White American , 5.6% Black or African American , 1% Native American , 10.4% Asian , 0.5% Pacific Islander , 10.3% from other races , and 3.6% from two or more races. 31.3% of the population were Hispanic or Latino of any race. 67.0% spoke only English at home; 21.9% spoke Spanish, 3.1% Tagalog and 1.2% Vietnamese . As of 2018,

11760-425: The unincorporated areas of the county. Companies must be licensed by the local agency to operate and each city or county may authorize none or only some of these activities. Local governments may not prohibit adults, who are in compliance with state laws, from growing, using, or transporting marijuana for personal use. Tourism plays a large part in the economics of the San Diego metropolitan area. Tourists are drawn to

11872-790: The urban and suburban San Diego area straddles areas of Mediterranean climate (Csa) to the north and hot semi-arid climate (BSh) to the south and east. As a result, it is often described as "arid Mediterranean" and "semi-arid steppe." Farther east, arid desert conditions prevail. Western San Diego's climate is characterized by warm, dry summers and mild winters with most of the annual precipitation falling between November and March. The city has mild, mostly dry weather, with an average of 201 days above 70 °F (21 °C) and low rainfall (9–13 inches (23–33 cm) annually). Summer temperatures are generally warm, with average highs of 70–78 °F (21–26 °C) and lows of 55–66 °F (13–19 °C). Temperatures exceed 90 °F (32 °C) only four days

11984-437: Was 65 years of age or older. The median age was 33 years. For every 100 females, there were 101.2 males. For every 100 females age 18 and over, there were 99.7 males. In 2012, it was estimated that there were 198,000 unauthorized immigrants ; the origin of the plurality of them is Mexico . In 2018, the median household income was $ 70,824; most people spend more than 30% of their income on housing costs. In August of that year,

12096-440: Was dissolved by the District of Columbia Organic Act . Jefferson County , for Thomas Jefferson , is next with 26. The most recent president to have a county named for him was Warren G. Harding , reflecting the slowing rate of county creation since New Mexico and Arizona became states in 1912. The most common names for counties not named after a president are Franklin (25), Clay (18), and Montgomery (18). After people,

12208-413: Was made until the fort was begun in May 1769. On July 16, 1769, Mission San Diego de Alcalá was established by Junípero Serra on Presidio Hill. The presidio had a commanding view of San Diego Bay and the Pacific Ocean, allowing the Spanish to see potential intruders. Less than a month after the mission was established, a Kumeyaay uprising occurred; four Spaniards were wounded and a boy was killed. After

12320-628: Was part of Alta California under the Viceroyalty of New Spain until the Mexican declaration of independence . From 1821 through 1848, this area was part of Mexico . San Diego County became part of the United States as a result of the Treaty of Guadalupe Hidalgo in 1848, ending the Mexican–American War . This treaty designated the border to pass through a point one marine league south of

12432-580: Was registered as a California Historical Landmark in 1932, then declared a National Historic Landmark in 1960. Prior to occupation by the Spanish, the site of the Presidio was home to the Kumeyaay people (called the Diegueños by the Spaniards). The first Europeans to explore San Diego Bay and its environs were members of the maritime expedition led by Juan Rodríguez Cabrillo in 1542. Sebastián Vizcaíno visited again in 1602, but no settlement

12544-495: Was worth $ 1.85 billion in 2013, and is one of the top five egg producing counties in the United States. In 2013, San Diego County also had the most small farms of any county in the United States, and had the 19th largest agricultural economy of any county in the United States. According to the San Diego Farm Bureau, San Diego County is the United States' leading producer of avocados and nursery crops . Until

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