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106-683: Sammamish ( / s ə ˈ m æ m ɪ ʃ / sə- MAM -ish ) is a city in King County , Washington , United States. The population was 67,455 at the 2020 census . Located on a plateau, the city is bordered by Lake Sammamish to the west and the Snoqualmie Valley to the east. Sammamish is situated 20 miles east of Seattle , is a member of the Eastside , and is a part of the Seattle metropolitan area . Incorporated in 1999, Sammamish

212-436: A choropleth map . In meteorology, the word isopleth is used for any type of contour line. Meteorological contour lines are based on interpolation of the point data received from weather stations and weather satellites . Weather stations are seldom exactly positioned at a contour line (when they are, this indicates a measurement precisely equal to the value of the contour). Instead, lines are drawn to best approximate

318-400: A topographic map , which thus shows valleys and hills, and the steepness or gentleness of slopes. The contour interval of a contour map is the difference in elevation between successive contour lines. The gradient of the function is always perpendicular to the contour lines. When the lines are close together the magnitude of the gradient is large: the variation is steep. A level set is

424-479: A warm-summer Mediterranean climate ( Köppen : Csb ), or oceanic ( Köppen : Cfb ) if the 30 millimetres (1.2 in) isohyet is used. Due to the rain shadow effect of the Olympic Mountains to the west, summers are much drier here than on the immediate west coast of Washington. Winters are cool and wet; the wettest months are November, December, and January, when the area is directly affected by

530-709: A word without a repeated letter . As late as 1944, John K. Wright still preferred isogram , but it never attained wide usage. During the early 20th century, isopleth ( πλῆθος , plethos , 'amount') was being used by 1911 in the United States, while isarithm ( ἀριθμός , arithmos , 'number') had become common in Europe. Additional alternatives, including the Greek-English hybrid isoline and isometric line ( μέτρον , metron , 'measure'), also emerged. Despite attempts to select

636-634: A chart of the English Channel that was prepared in 1737 and published in 1752. Such lines were used to describe a land surface (contour lines) in a map of the Duchy of Modena and Reggio by Domenico Vandelli in 1746, and they were studied theoretically by Ducarla in 1771, and Charles Hutton used them in the Schiehallion experiment . In 1791, a map of France by J. L. Dupain-Triel used contour lines at 20-metre intervals, hachures, spot-heights and

742-411: A constant pressure surface chart. Isohypse and isoheight are simply known as lines showing equal pressure on a map. An isotherm (from Ancient Greek θέρμη (thermē)  'heat') is a line that connects points on a map that have the same temperature . Therefore, all points through which an isotherm passes have the same or equal temperatures at the time indicated. An isotherm at 0 °C

848-407: A curve of constant electric potential . Whether crossing an equipotential line represents ascending or descending the potential is inferred from the labels on the charges. In three dimensions, equipotential surfaces may be depicted with a two dimensional cross-section, showing equipotential lines at the intersection of the surfaces and the cross-section. The general mathematical term level set

954-436: A generalization of a contour line for functions of any number of variables. Contour lines are curved, straight or a mixture of both lines on a map describing the intersection of a real or hypothetical surface with one or more horizontal planes. The configuration of these contours allows map readers to infer the relative gradient of a parameter and estimate that parameter at specific places. Contour lines may be either traced on

1060-431: A given location and is used in the generation of isochrone maps . An isotim shows equivalent transport costs from the source of a raw material, and an isodapane shows equivalent cost of travel time. Contour lines are also used to display non-geographic information in economics. Indifference curves (as shown at left) are used to show bundles of goods to which a person would assign equal utility. An isoquant (in

1166-565: A larger margin for the Democrats than that seen in any previous election up to that point in time. Slightly more than 29% of Washington state's population reside in King County, making it a significant factor for the Democrats in a few recent close statewide elections. In the 2000 Senate election , King County's margin of victory pushed Maria Cantwell 's total over that of incumbent Republican Slade Gorton , defeating and unseating him in

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1272-828: A line of constant annual variation of magnetic declination . An isoclinic line connects points of equal magnetic dip , and an aclinic line is the isoclinic line of magnetic dip zero. An isodynamic line (from δύναμις or dynamis meaning 'power') connects points with the same intensity of magnetic force. Besides ocean depth, oceanographers use contour to describe diffuse variable phenomena much as meteorologists do with atmospheric phenomena. In particular, isobathytherms are lines showing depths of water with equal temperature, isohalines show lines of equal ocean salinity, and isopycnals are surfaces of equal water density. Various geological data are rendered as contour maps in structural geology , sedimentology , stratigraphy and economic geology . Contour maps are used to show

1378-586: A mostly rural area until suburban homes, shopping centers, and schools were built in the 1970s and 1980s. However, from approximately 1900 through the Great Depression , there was a tiny hamlet in Inglewood community (at today's Weber Point) of approximately 50 people who called the area "Sammamish", and later, in the 1960s, there was a suburban community and school at what is now Sunny Hills. A vote in 1991 to join neighboring Issaquah failed, as did

1484-513: A peninsular independence movement; King County lost what is now Kitsap County but preserved its entertainment industry. Coal was discovered in 1853 by M. Bigelow along the Black River , and in subsequent decades several companies formed to mine coal around Lake Washington and deliver it to Seattle. The Seattle and Walla Walla Railroad started servicing the Renton coal fields in 1877, and

1590-426: A picture of the major thermodynamic factors in a weather system. An isobar (from Ancient Greek βάρος (baros)  'weight') is a line of equal or constant pressure on a graph, plot, or map; an isopleth or contour line of pressure. More accurately, isobars are lines drawn on a map joining places of equal average atmospheric pressure reduced to sea level for a specified period of time. In meteorology ,

1696-440: A point; this distinction has since been followed generally. An example of an isopleth is population density , which can be calculated by dividing the population of a census district by the surface area of that district. Each calculated value is presumed to be the value of the variable at the centre of the area, and isopleths can then be drawn by a process of interpolation . The idea of an isopleth map can be compared with that of

1802-408: A population greater than 65,000. The top five reported ancestries (people were allowed to report up to two ancestries, thus the figures will generally add to more than 100%) were English (56.3%), Spanish (3.4%), Indo-European (14.6%), Asian and Pacific Islander (24.4%), and Other (1.2%). The median age in the city was 41.3 years. In 2007, CNN Money ranked Sammamish as the 11th Best Place to Live in

1908-489: A single standard, all of these alternatives have survived to the present. When maps with contour lines became common, the idea spread to other applications. Perhaps the latest to develop are air quality and noise pollution contour maps, which first appeared in the United States in approximately 1970, largely as a result of national legislation requiring spatial delineation of these parameters. Contour lines are often given specific names beginning with " iso- " according to

2014-421: A specific time interval, and katallobars , lines joining points of equal pressure decrease. In general, weather systems move along an axis joining high and low isallobaric centers. Isallobaric gradients are important components of the wind as they increase or decrease the geostrophic wind . An isopycnal is a line of constant density. An isoheight or isohypse is a line of constant geopotential height on

2120-418: A total of $ 123 million was spent on homelessness services by local governments in King County, including cities and the regional authority. The regional authority's five-year plan, released in 2023, estimates that $ 8 billion in capital costs would be required to build and staff 18,205 new units of temporary and transitional housing to address the homelessness crisis. The King County Executive heads

2226-461: A variety of scales, from large-scale engineering drawings and architectural plans, through topographic maps and bathymetric charts , up to continental-scale maps. "Contour line" is the most common usage in cartography , but isobath for underwater depths on bathymetric maps and isohypse for elevations are also used. In cartography, the contour interval is the elevation difference between adjacent contour lines. The contour interval should be

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2332-787: A vertical section. In 1801, the chief of the French Corps of Engineers, Haxo , used contour lines at the larger scale of 1:500 on a plan of his projects for Rocca d'Anfo , now in northern Italy, under Napoleon . By around 1843, when the Ordnance Survey started to regularly record contour lines in Great Britain and Ireland , they were already in general use in European countries. Isobaths were not routinely used on nautical charts until those of Russia from 1834, and those of Britain from 1838. As different uses of

2438-485: A visible three-dimensional model of the surface , as when a photogrammetrist viewing a stereo-model plots elevation contours, or interpolated from the estimated surface elevations , as when a computer program threads contours through a network of observation points of area centroids. In the latter case, the method of interpolation affects the reliability of individual isolines and their portrayal of slope , pits and peaks. The idea of lines that join points of equal value

2544-512: A vote on incorporation the following year. A renewed movement to become a city, born of frustration with development policies set by the county government, met with voter approval in 1998. Sammamish was officially incorporated on August 31, 1999. The city annexed Klahanie on January 1, 2016. The city government approved plans in 2008 to develop a denser town center with mixed use zoning and taller buildings. The first two residential buildings and several commercial developments were completed over

2650-446: Is a contour line for a variable which measures direction. In meteorology and in geomagnetics, the term isogon has specific meanings which are described below. An isocline ( κλίνειν , klinein , 'to lean or slope') is a line joining points with equal slope. In population dynamics and in geomagnetics, the terms isocline and isoclinic line have specific meanings which are described below. A curve of equidistant points

2756-452: Is a line joining points with constant wind speed. In meteorology, the term isogon refers to a line of constant wind direction. An isopectic line denotes equal dates of ice formation each winter, and an isotac denotes equal dates of thawing. Contours are one of several common methods used to denote elevation or altitude and depth on maps . From these contours, a sense of the general terrain can be determined. They are used at

2862-438: Is a line of equal or constant dew point . An isoneph is a line indicating equal cloud cover. An isochalaz is a line of constant frequency of hail storms, and an isobront is a line drawn through geographical points at which a given phase of thunderstorm activity occurred simultaneously. Snow cover is frequently shown as a contour-line map. An isotach (from Ancient Greek ταχύς (tachus)  'fast')

2968-522: Is a line of equal temperature beneath the Earth's surface. An isohyet or isohyetal line (from Ancient Greek ὑετός (huetos)  'rain') is a line on a map joining points of equal rainfall in a given period. A map with isohyets is called an isohyetal map . An isohume is a line of constant relative humidity , while an isodrosotherm (from Ancient Greek δρόσος (drosos)  'dew' and θέρμη (therme)  'heat')

3074-485: Is a set of points all at the same distance from a given point , line , or polyline . In this case the function whose value is being held constant along a contour line is a distance function . In 1944, John K. Wright proposed that the term isopleth be used for contour lines that depict a variable which cannot be measured at a point, but which instead must be calculated from data collected over an area, as opposed to isometric lines for variables that could be measured at

3180-580: Is an affluent community and has been ranked as one of the wealthiest cities in Washington. Sammamish is a Snoqualmie name formed from the words "squax" (Sammamish Lake) and "abs", a suffix used to describe people of a specific area. The name is roughly translated to "people of Lake Sammamish" in the Snoqualmie language . Lake Sammamish and the adjacent plateau has been Duwamish , Suquamish , Snoqualmie , Sammamish , and Snohomish territory since

3286-616: Is called the freezing level . The term lignes isothermes (or lignes d'égale chaleur) was coined by the Prussian geographer and naturalist Alexander von Humboldt , who as part of his research into the geographical distribution of plants published the first map of isotherms in Paris, in 1817. According to Thomas Hankins, the Scottish engineer William Playfair 's graphical developments greatly influenced Alexander von Humbolt's invention of

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3392-546: Is connected to West Seattle at Fauntleroy and also has service to Southworth in Kitsap County. The county government's Marine Division operates the King County Water Taxi , a passenger ferry service that connects Downtown Seattle to West Seattle and Vashon Island . The passenger-only Kitsap Fast Ferries system operated by Kitsap Transit connects a terminal near Colman Dock to communities on

3498-508: Is especially important in riparian zones. An isoflor is an isopleth contour connecting areas of comparable biological diversity. Usually, the variable is the number of species of a given genus or family that occurs in a region. Isoflor maps are thus used to show distribution patterns and trends such as centres of diversity. In economics , contour lines can be used to describe features which vary quantitatively over space. An isochrone shows lines of equivalent drive time or travel time to

3604-538: Is home two federally-recognized tribes, the Muckleshoot tribe and the Snoqualmie Indian Tribe tribe, and other unrecognized groups. The Muckleshoot Indian Reservation is located southeast of Auburn and is home to a resident population of 3,606 as of the 2000 census. The Snoqualmie tribe's casino property was federally recognized as their reservation in 2006, however few tribe members live near

3710-454: Is indicated on maps with isoplats . Some of the most widespread applications of environmental science contour maps involve mapping of environmental noise (where lines of equal sound pressure level are denoted isobels ), air pollution , soil contamination , thermal pollution and groundwater contamination. By contour planting and contour ploughing , the rate of water runoff and thus soil erosion can be substantially reduced; this

3816-470: Is often used to describe the full collection of points having a particular potential, especially in higher dimensional space. In the study of the Earth's magnetic field , the term isogon or isogonic line refers to a line of constant magnetic declination , the variation of magnetic north from geographic north. An agonic line is drawn through points of zero magnetic declination. An isoporic line refers to

3922-505: Is predicted to warm by 3-12 F (2-7 C) before 2100 regardless of future emissions, and around 2.5 F during the next few decades due to climate change . Warming by any significant amount will cause Sammamish to have reduced snowfall, hotter and drier summers, and more warm-season extreme weather events. Sammamish's climate change action plan includes, but is not limited to, tree replacement, voluntary planting , protecting threatened species , protecting native fish such as Chinook salmon and

4028-494: Is served by Issaquah School District , and has two high schools (Issaquah, Skyline ), three middle schools (Beaver Lake, Pacific Cascade, Pine Lake ), and seven elementary schools (Cascade Ridge, Cedar Trails, Challenger, Creekside, Discovery, Endeavour, Sunny Hills). A very small portion to the east is in the Snoqualmie Valley School District . Eastside Catholic School is a private school in

4134-412: Is shown in all areas. Conversely, for an island which consists of a plateau surrounded by steep cliffs, it is possible to use smaller intervals as the height increases. An isopotential map is a measure of electrostatic potential in space, often depicted in two dimensions with the electrostatic charges inducing that electric potential . The term equipotential line or isopotential line refers to

4240-650: Is situated on the shores and hilly terrain east of Lake Sammamish . It is bordered to the south by Issaquah , to the northwest by Redmond , and to the west across Lake Sammamish by Bellevue . Beaver Lake and Pine Lake are the two biggest lakes in Sammamish. Yellow Lake is a major lake in Klahanie. Sammamish is in and near the Issaquah Alps , a westward extension of the Cascade foothills. The city has

4346-631: Is used in the flag. Martin Luther King Jr. had visited King County once, for three days in November 1961. According to the United States Census Bureau , the county has a total area of 2,307 square miles (5,980 km ), of which 2,116 square miles (5,480 km ) is land and 191 square miles (490 km ) (8.3%) is water. King County has nearly twice the land area of the state of Rhode Island . The highest point in

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4452-770: Is vested in the King County Superior Court and the King County District Court . Seattle houses the King County Courthouse . The county government manages elections, records, licensing, parks, wastewater treatment, and public health, among other duties. It also handles the criminal legal and incarceration system for all cities and unincorporated areas within King County. It has a sheriff's department that also provides basic policing to unincorporated areas. The Department of Local Services, established in 2019, serves as

4558-410: The 12th-most populous in the United States. The county seat is Seattle , also the state's most populous city . Originally named after US representative, senator, and then vice president-elect William R. King in 1852, the county government amended its designation in 1986 to honor Martin Luther King Jr. , a prominent activist and leader during the civil rights movement . The change was approved by

4664-530: The 2010 census , there were 45,780 people, 15,154 households, and 12,918 families residing in the city. The population density was 2,512.2 inhabitants per square mile (970.0/km). There were 15,736 housing units at an average density of 863.7 per square mile (333.5/km). The racial makeup of the city was 74.72% White , 0.96% African American , 0.28% Native American , 19.34% Asian , 0.10% Pacific Islander , 0.86% from some other races and 3.74% from two or more races. Hispanic or Latino people of any race were 3.94% of

4770-458: The 8th district includes areas east of Lake Sammamish and the immediate Green River Valley; and the 9th district comprises the southern areas of the county from Federal Way to Seattle, Mercer Island, and part of Bellevue. In the state legislature , the county has 17 districts that each elect two House members and one senator . The majority of state legislators from King County are Democrats; only four House members and two senators are from

4876-626: The Aleutian Low , and summers are warm and dry; the driest months are July and August. Snowfall is rare; subfreezing temperatures usually occur with a high-pressure system , which brings clear skies. Extremes range from −8 °F (−22 °C) in February 1950, to 113 °F (45 °C) in June 2021 . Sammamish is in hardiness zone 8b, with small southwestern pockets as well as the immediate Lake Sammamish coast falling into type 9a. Sammamish

4982-624: The Kitsap Peninsula . The center of population of the state of Washington in 2010 was located in eastern King County ( 47°19′51″N 121°37′12″W  /  47.330750°N 121.619994°W  / 47.330750; -121.619994  ( Washington center of population, 2010 ) ). King County's own center of population was located on Mercer Island ( 47°32′54″N 122°13′48″W  /  47.548320°N 122.229983°W  / 47.548320; -122.229983  ( King County center of population, 2010 ) ). As of

5088-725: The Newcastle fields in 1878. By 1880, King County produced 22% of the coal mined on the West Coast, most of that coal being found within the Renton Formation 's Muldoon coal seam. On February 24, 1986, the King County Council approved a motion to rename the county to honor civil rights leader Martin Luther King Jr. (no relation to William R. King), preserving the name "King County" while changing its namesake. The motion stated, among other reasons for

5194-636: The Pierce Transit of Pierce County also operate routes that serve portions of King County. Most transit modes in the county use the ORCA card , a smart fare card system introduced in 2009. The county is home to three major ferry terminals that are served by Washington State Ferries , a state-run passenger and automobile ferry system. Colman Dock in Downtown Seattle is served by routes from Bainbridge Island and Bremerton ; Vashon Island

5300-623: The United States Senate . In 2004, King County gave a lead to Democrat Christine Gregoire in her 2004 victory gubernatorial election , pushing her ahead of Republican Dino Rossi , who led by 261 votes after the initial count. Rossi resided in the county at the time of the election, in Sammamish . In the 2020 presidential election , Joe Biden defeated Donald Trump by earning 75% of King County votes. Governor Jay Inslee also defeated Republican challenger Loren Culp with 74% of

5406-514: The barometric pressures shown are reduced to sea level , not the surface pressures at the map locations. The distribution of isobars is closely related to the magnitude and direction of the wind field, and can be used to predict future weather patterns. Isobars are commonly used in television weather reporting. Isallobars are lines joining points of equal pressure change during a specific time interval. These can be divided into anallobars , lines joining points of equal pressure increase during

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5512-407: The city streetcar system . Metro was the seventh-largest transit bus agency in the United States by ridership in 2019, with 121.3 million annual passenger trips and 400,000 per weekday. Sound Transit manages Link light rail , Sounder commuter rail , and Sound Transit Express buses in King County that provide connections to adjacent counties. The Community Transit of Snohomish County and

5618-414: The last Pleistocene glaciation , before contact with European people. They lived in longhouse villages in seven places on and near the coast of Sammamish Lake. Two of them were in present-day Sammamish. The Sammamish Plateau was part of unincorporated King County for most of its recorded history. The first settlers arrived in the 1870s and established a trio of resorts by the 1930s. The plateau remained

5724-639: The point-in-time count system, estimates 14,149 people in the county have experienced homelessness; the King County Regional Homelessness Authority (KCRHA) adopted a different methodology based on the number of people seeking services and estimated that 53,532 people in the county had been homeless at some point in 2022. According to a survey collected by service providers for the county government, 68.5 percent of respondents said they last had stable housing in King County and 10.8 percent had lived elsewhere in

5830-479: The technology industry . When Europeans arrived in the region that would become King County, it was inhabited by several Coast Salish groups. Villages around the site that would become Seattle were primarily populated by the Duwamish people . The Snoqualmie Indian Tribe occupied the area that would become eastern King County. The Green River and White River were home for the Muckleshoot tribal groups. In

5936-478: The 1960s to run through Sammamish, but has not been built. Bus service is provided by King County Metro routes 218, 269, and Sound Transit Express route 554 to Redmond, Issaquah, and Downtown Seattle . South Sammamish Park and Ride is the city's transit center with 265 parking stalls. Metro began running dial-a-ride buses to the Sammamish Plateau in 1993, and it later extended commuter services in

6042-528: The King County vote in the concurrent gubernatorial election . These were the largest margins by any candidate in a presidential race and a gubernatorial race since the county's creation. In 2004, voters passed a referendum reducing the size of the County Council from 13 members to 9. This resulted in all council seats ending up on the 2005 ballot. Some residents of eastern King County have long desired to secede and form their own county. This movement

6148-519: The North Pacific fishing fleet and the largest homeport for fishermen in the U.S. West Coast; four container ship terminals; two cruise ship terminals; the largest grain export terminal in the U.S. Pacific Northwest; three public marinas ; 22 public parks; and nearly 5,000 acres of industrial lands in the Ballard - Interbay and Lower Duwamish industrial centers . The King County Council

6254-749: The Republican Party. The people of King County voted on September 5, 1911, to create a Port District. King County's Port of Seattle was established as the first Port District in Washington State. The Port of Seattle is King County's only Port District. It is governed by five Port Commissioners, who are elected countywide and serve four-year terms. The Port of Seattle owns and operates many properties on behalf of King County's citizens, including Sea-Tac International Airport ; many seaport facilities around Elliott Bay , including its original property, publicly owned Fishermen's Terminal , home to

6360-694: The Sammamish Commons, which is also the site of Sammamish Library, a branch of the King County Library System . Sammamish does not have its own post office; the closest one is in Redmond . Eastside Fire and Rescue is contracted to provide fire services. Sammamish contracts with the King County Sheriff's Office for police services. Deputies assigned to Sammamish wear city uniforms and drive patrol cars marked with

6466-461: The United States, and subsequently ranked it as #12 in 2009 and #15 in 2011. Sammamish was also ranked the 9th Best Place to Live by Money.com in 2018. As of the 2020 census , there were 67,455 people, 21,895 households, and 18,861 families residing in the city. The population density was 3,302.9 inhabitants per square mile (1,275.3/km). There were 22,544 housing units at an average density of 1,103.9 per square mile (426.2/km). The racial makeup of

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6572-402: The average family size was 3.29. In the city the population was spread out, with 33.4% under the age of 18, 4.8% from 18 to 24, 33.2% from 25 to 44, 24.6% from 45 to 64, and 4.0% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 101.7 males. For every 100 females age 18 and over, there were 98.5 males. The median income for a household in the city

6678-452: The below ground surface of geologic strata , fault surfaces (especially low angle thrust faults ) and unconformities . Isopach maps use isopachs (lines of equal thickness) to illustrate variations in thickness of geologic units. In discussing pollution, density maps can be very useful in indicating sources and areas of greatest contamination. Contour maps are especially useful for diffuse forms or scales of pollution. Acid precipitation

6784-469: The change, that " William Rufus DeVane King was a slaveowner " who "earned income and maintained his lifestyle by oppressing and exploiting other human beings," while Martin Luther King's "contributions are well-documented and celebrated by millions throughout this nation and the world, and embody the attributes for which the citizens of King County can be proud, and claim as their own." Because only

6890-646: The city and are on the plateau. East Lake Sammamish Trail runs along the eastern side of Lake Sammamish and connects to a regional trail system, like the Sammamish River Trail to the north, and the Issaquah-Preston Trail to the south. East Sammamish Park in the northwest of the city came with it in 1999. The Sammamish City Council is elected by the community. Of the seven council members, two members are elected as Mayor and Deputy Mayor. Council meetings are held at City Hall, part of

6996-422: The city logo. Sammamish's public school system is primarily served by two school districts. North Sammamish is served by Lake Washington School District , and has two high schools ( Eastlake , Tesla STEM ), two middle schools (Inglewood, Renaissance School of Art and Reasoning ), and five elementary schools (Elizabeth Blackwell, Rachel Carson, Christa McAuliffe, Margaret Mead, Samantha Smith). South Sammamish

7102-480: The city of Seattle. According to data from the KCRHA, since late 2022 over 90 percent of shelter beds have been occupied on a consistent basis. Additional shelters, parking lots, and encampment sites are operated by charity organizations and churches in the area; during severe weather events such as heat waves and cold snaps, local governments open additional shelter spaces, but these often reach capacity. In 2021,

7208-415: The city was 52.61% White , 1.28% African American , 0.21% Native American , 35.82% Asian , 0.10% Pacific Islander , 1.44% from some other races and 8.54% from two or more races. Hispanic or Latino people of any race were 5.36% of the population. 29.4% of residents were under the age of 18, 6.1% were under 5 years of age, and 51.1% were 65 and older. The gender makeup of the city was 51.1% female. As of

7314-497: The city. Central Washington University is a public university that opened a Sammamish location on September 20, 2017. Sammamish is served by three major north–south roads: East Lake Sammamish Parkway, 228th Avenue, and 244th Avenue. They connect to State Route 202 to the north, providing access to Redmond , and Interstate 90 to the south in Issaquah . A regional freeway, Interstate 605 , has been proposed several times since

7420-433: The city. The population density was 1,888.9 inhabitants per square mile (729.3/km). There were 11,599 housing units at an average density of 642.4 per square mile (248.0/km). The racial makeup of the city was 87.82% White , 0.85% African American , 0.29% Native American , 7.89% Asian , 0.09% Pacific Islander , 0.60% from some other races and 2.46% from two or more races. Hispanic or Latino people of any race were 2.50% of

7526-618: The county is Mount Daniel at 7,959 feet (2,426 meters) above sea level. King County borders Snohomish County to the north, Kitsap County to the west, Kittitas County to the east, and Pierce County to the south. It also shares a small border with Chelan County to the northeast. King County includes Vashon Island and Maury Island in Puget Sound . The county has 760 lakes and 3,000 miles (4,800 km) of streams and rivers. King County has been identified as vulnerable to higher risks of flooding caused by climate change due to

7632-476: The county was 56.1% White (54.2% Non-Hispanic White ), 6.7% African American (6.5% Non-Hispanic Black), 19.9% Asian (19.8% Non-Hispanic Asian), 0.9% Pacific Islander (0.8% Non-Hispanic Pacific Islander), 0.5% Native American , 5.2% from other races, and 10.4% from two or more races . Those of Hispanic or Latino origin made up 10.7% of the population. As of the 2010 census , there were 1,931,249 people, 789,232 households, and 461,510 families residing in

7738-544: The county's executive branch; the position has been held by Dow Constantine since 2009. The King County Prosecuting Attorney ( Leesa Manion since 2023), Elections Director, and the King County Assessor are elected executive positions. The King County Sheriff is appointed by the county executive and approved by the county council. It was previously an elected position from 1996 until 2020 and has been held by Patti Cole-Tindall since 2022. Judicial power

7844-521: The county's logo from an imperial crown to an image of Martin Luther King Jr. On March 12, 2007, the new logo was unveiled. The new logo design was developed by the Gable Design Group and the specific image was selected by a committee consisting of King County Executive Ron Sims , Council Chair Larry Gossett, Prosecutor Norm Maleng , Sheriff Sue Rahr, District Court Judge Corrina Harn, and Superior Court Judge Michael Trickey. The same logo

7950-460: The county. The population density was 912.9 inhabitants per square mile (352.5/km ). There were 851,261 housing units at an average density of 402.4 per square mile (155.4/km ). The racial makeup of the county was 68.7% White (64.8% Non-Hispanic White ), 6.2% African American , 14.6% Asian , 0.8% Pacific Islander , 0.8% Native American , 3.9% from other races, and 5.0% from two or more races . Those of Hispanic or Latino origin made up 8.9% of

8056-428: The early 2000s. The King County government completed construction of an 11-mile (18 km) bike trail on the east side of Lake Sammamish in 2023. Construction began in 1998, replacing a disused railway. King County, Washington King County is a county located in the U.S. state of Washington . The population was 2,269,675 in the 2020 census , making it the most populous county in Washington , and

8162-515: The exception of Seattle, Hunts Point , and Yarrow Point . The city of Seattle is served by the Seattle Public Library system, which has 27 branches compared to King County's 49 locations. Isohyet In cartography , a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level . A contour map is a map illustrated with contour lines, for example

8268-611: The first winter after the Denny Party landed at Alki Point , the settlement at the point consisted of a few dozen settlers and over a thousand Native Americans. The local tribes provided the settlers with construction labor, domestic service, and help with subsistence activities. On December 22, 1852, the Oregon Territory legislature formed King County out of territory from within Thurston County . The county

8374-464: The following decade, but plans for the largest phase stalled into the 2020s. Construction began in 2024 on 38 townhomes in the phase, which is planned to be followed by more townhomes, 600 market rate apartments, and commercial space. According to the United States Census Bureau , the city has a total area of 24.04 square miles (62.26 km), of which 20.43 square miles (52.91 km) are land and 3.61 square miles (9.35 km) are water. The city

8480-452: The fourth quarter of 2021, the median home value in King County was $ 817,547, an increase of 19.6% from the prior year. In 2021 King County experienced its first population decline in 50 years. As of the 2020 census , there were 2,269,675 people, 917,764 households, and 537,466 families residing in the county. The population density was 1,073.0 inhabitants per square mile (414.3/km ) There were 969,234 housing units. The racial makeup of

8586-456: The image at right) is a curve of equal production quantity for alternative combinations of input usages , and an isocost curve (also in the image at right) shows alternative usages having equal production costs. In political science an analogous method is used in understanding coalitions (for example the diagram in Laver and Shepsle's work ). In population dynamics , an isocline shows

8692-429: The isotherm. Humbolt later used his visualizations and analyses to contradict theories by Kant and other Enlightenment thinkers that non-Europeans were inferior due to their climate. An isocheim is a line of equal mean winter temperature, and an isothere is a line of equal mean summer temperature. An isohel ( ἥλιος , helios , 'Sun') is a line of equal or constant solar radiation . An isogeotherm

8798-574: The local government for populated unincorporated areas. King County is part of four congressional districts that each elect a member of the United States House of Representatives ; the boundaries are redrawn every 10 years based on the results of the decennial census. The 1st district comprises the Eastside cities north of Bellevue ; the 7th district includes northern Seattle, West Seattle, Burien, Normandy Park, and Vashon Island;

8904-442: The locations of exact values, based on the scattered information points available. Meteorological contour maps may present collected data such as actual air pressure at a given time, or generalized data such as average pressure over a period of time, or forecast data such as predicted air pressure at some point in the future. Thermodynamic diagrams use multiple overlapping contour sets (including isobars and isotherms) to present

9010-427: The map key. Usually contour intervals are consistent throughout a map, but there are exceptions. Sometimes intermediate contours are present in flatter areas; these can be dashed or dotted lines at half the noted contour interval. When contours are used with hypsometric tints on a small-scale map that includes mountains and flatter low-lying areas, it is common to have smaller intervals at lower elevations so that detail

9116-482: The nature of the variable being mapped, although in many usages the phrase "contour line" is most commonly used. Specific names are most common in meteorology, where multiple maps with different variables may be viewed simultaneously. The prefix "' iso- " can be replaced with " isallo- " to specify a contour line connecting points where a variable changes at the same rate during a given time period. An isogon (from Ancient Greek γωνία (gonia)  'angle')

9222-603: The number of waterways in the area. The county's oceanic ecosystems are predicted to face harmful chemical changes, while the mountainous ecosystems could experience a decrease in ice and snow. Since the mid-2000s, the county government has adopted policies to mitigate the effects of climate change and reduce carbon dioxide emissions in the region. The King County Metro serves the county with local routes, paratransit , vanpools , and rideshare in select areas. It also operates an electric trolleybus network in Seattle as well as

9328-416: The per capita income was $ 103,748. Approximately 2.9% of the city's population lives at or below the poverty line. Sammamish has an estimated 66.7% employment rate, with 83.4% of the population holding a bachelor's degree or higher and 97.8% holding a high school diploma. The U.S. Census Bureau estimated that the median household income in Sammamish was $ 239,000 in 2022, placing it first among U.S. cities with

9434-498: The population was claimed as members by religious congregations, although members of historically African-American denominations were underrepresented due to incomplete information. In 2014, King County had 944 religious organizations, the 8th most out of all US counties. King County has the third largest population of homeless or unsheltered people in the United States according to the U.S. Department of Housing and Urban Development (HUD). The agency's January 2023 report, based on

9540-407: The population. There were 11,131 households, out of which 53.3% had children under the age of 18 living with them, 79.5% were married couples living together, 5.3% had a female householder with no husband present, and 13.3% were non-families. 9.4% of all households were made up of individuals, and 1.5% had someone living alone who was 65 years of age or older. The average household size was 3.06 and

9646-441: The population. There were 15,154 households, of which 52.9% had children under the age of 18 living with them, 76.9% were married couples living together, 5.6% had a female householder with no husband present, 2.7% had a male householder with no wife present, and 14.8% were non-families. 11.4% of all households were made up of individuals, and 2.1% had someone living alone who was 65 years of age or older. The average household size

9752-445: The population. In terms of ancestry, 17.1% were German , 11.6% were English , 11.1% were Irish , 5.5% were Norwegian , and 2.9% were American . Of the 789,232 households, 29.2% had children under the age of 18 living with them, 45.3% were married couples living together, 9.1% had a female householder with no husband present, 41.5% were non-families, and 31.0% of all households were made up of individuals. The average household size

9858-715: The reservation. In 2010 statistics, the largest religious group in King County was the Archdiocese of Seattle , with 278,340 Catholics worshipping at 71 parishes, followed by 95,218 non-denominational adherents with 159 congregations, 56,985 LDS Mormons with 110 congregations, 25,937 AoG Pentecostals with 63 congregations, 25,789 ELCA Lutherans with 68 congregations, 24,909 PC-USA Presbyterians with 54 congregations, 18,185 Mahayana Buddhists with 39 congregations, 18,161 UMC Methodists with 50 congregations, 14,971 TEC Episcopalians with 35 congregations, and 12,531 ABCUSA Baptists with 42 congregations. Altogether, 37.6% of

9964-407: The same over a single map. When calculated as a ratio against the map scale, a sense of the hilliness of the terrain can be derived. There are several rules to note when interpreting terrain contour lines: Of course, to determine differences in elevation between two points, the contour interval, or distance in altitude between two adjacent contour lines, must be known, and this is normally stated in

10070-497: The state can charter counties, the change was not made official until April 19, 2005, when Governor Christine Gregoire signed into law Senate Bill 5332, which provided that "King county is renamed in honor of the Reverend Doctor Martin Luther King, Jr." effective July 24, 2005. The County Council voted on February 27, 2006, to adopt the proposal sponsored by Councilmember Larry Gossett to change

10176-438: The state government in 2005. It is one of three Washington counties that are included in the Seattle – Tacoma – Bellevue metropolitan statistical area along with Snohomish County to the north and Pierce County to the south. About two-thirds of King County's population lives in Seattle's suburbs , which largely developed in the late 20th century and early 21st century as bedroom communities before becoming job centers for

10282-472: The state. Approximately 57 percent of the homeless population counted by HUD in King County was classified as unsheltered, either living in vehicles, encampments in public spaces, or other places. The number of unsheltered individuals increased significantly in the late 2010s, leading to clearing of encampments and other structures by local governments. The county has 5,115 emergency shelter beds and tiny house villages, of which 67 percent are in

10388-401: The streams, lakes and ponds they live in, floodplain management, wetland protection , emission reduction , light / noise pollution reduction, toxin (pesticide) control , and many other measures. As of the 2023 American Community Survey , there are 21,792 estimated households in Sammamish with an average of 2.98 persons per household. The city has a median household income of $ 238,750 and

10494-440: The technique were invented independently, cartographers began to recognize a common theme, and debated what to call these "lines of equal value" generally. The word isogram (from Ancient Greek ἴσος (isos)  'equal' and γράμμα (gramma)  'writing, drawing') was proposed by Francis Galton in 1889 for lines indicating equality of some physical condition or quantity, though isogram can also refer to

10600-607: Was $ 101,592, and the median income for a family was $ 104,356. Males had a median income of $ 76,688 versus $ 47,164 for females. The per capita income for the city was $ 42,971. About 2.0% of the population and 1.6% of families were below the poverty line , including 1.7% of those under age 18 and 3.2% of those age 65 or over. Sammamish has ten parks ( Beaver Lake Park , Big Rock Park North, Big Rock Park, East Sammamish Park, Ebright Creek Park, Evans Creek Preserve , NE Sammamish Park, Pine Lake Park, Sammamish Commons, Sammamish Landing). Soaring Eagle Regional Park and Duthie Hill Park abut

10706-472: Was 2.40 and the average family size was 3.05. The median age was 37.1 years. The median income for a household in the county was $ 68,065 and the median income for a family was $ 87,010. Males had a median income of $ 62,373 versus $ 45,761 for females. The per capita income for the county was $ 38,211. About 6.4% of families and 10.2% of the population were below the poverty line , including 12.5% of those under age 18 and 8.6% of those age 65 or over. King County

10812-433: Was 3.01 and the average family size was 3.28. The median age in the city was 37.7 years. 32.2% of residents were under the age of 18; 4.9% were between the ages of 18 and 24; 27.9% were from 25 to 44; 29.4% were from 45 to 64; and 5.7% were 65 years of age or older. The gender makeup of the city was 50.1% male and 49.9% female. As of the 2000 census , there were 34,104 people, 11,131 households, and 9,650 families living in

10918-497: Was established in 1969 and consists of nine members elected by districts to four-year terms. King County and Seattle are strongly liberal; the area is a bastion for the Democratic Party . No Republican presidential candidate has carried the county votes since Ronald Reagan 's landslide reelection victory in 1984 . In the 2008 election , Barack Obama defeated John McCain in the county by 42 percentage points,

11024-487: Was most vocal in the mid-1990s (see Cedar County, Washington ). It has recently been revived as Cascade County. According to a map published by the Seattle Times , four different geographic borders were considered. Additional plans (see Skykomish County, Washington ) also exist or have existed. School districts in the county include: Most of King County is served by the King County Library System , with

11130-683: Was named after Alabamian William R. King , who had just been elected Vice President of the United States under President Franklin Pierce . Seattle was made the county seat on January 11, 1853. The area became part of the Washington Territory when it was created later that year. King County originally extended to the Olympic Peninsula . According to historian Bill Speidel , when peninsular prohibitionists threatened to shut down Seattle's saloons, Doc Maynard engineered

11236-484: Was rediscovered several times. The oldest known isobath (contour line of constant depth) is found on a map dated 1584 of the river Spaarne , near Haarlem , by Dutchman Pieter Bruinsz. In 1701, Edmond Halley used such lines (isogons) on a chart of magnetic variation. The Dutch engineer Nicholas Cruquius drew the bed of the river Merwede with lines of equal depth (isobaths) at intervals of 1 fathom in 1727, and Philippe Buache used them at 10-fathom intervals on

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