30-596: Casa Grande Ruins National Monument ( O'odham : Siwañ Waʼa Ki: or Sivan Vahki ), in Coolidge, Arizona , located northeast of Casa Grande, Arizona , preserves a group of Hohokam structures dating to the Classic Period (1150–1450 CE ). The national monument consists of the ruins of multiple structures surrounded by a compound wall constructed by the ancient people of the Hohokam period, who farmed
60-482: A ball court much like that found at Pueblo Grande de Nevada . Father Eusebio Kino was the first European to view the Hohokam complex in November 1694 and named it Casa Grande. Graffiti from 19th-century passers-by is scratched into its walls; though this is now illegal. Casa Grande now has a distinctive modern roof covering built in 1932. In 1891, the monument underwent repairs supervised by Cosmos Mindeleff of
90-539: A factory for zero-emissions heavy trucks , with a production capacity of 2,500 trucks per year. According to the United States Census Bureau , the city has a total area of 5.0 square miles (13 km ), all of it land. It contains no mountains and is almost entirely flat, lying in a fertile valley located just south of the Gila River. The Sacaton Mountains are visible to the west, and
120-452: A female householder with no husband present, and 25.0% were non-families. 20.8% of all households were made up of individuals, and 9.9% had someone living alone who was 65 years of age or older. The average household size was 3.00 and the average family size was 3.44. In the city, the population was spread out, with 32.9% under age 18, 10.4% aged 18–24, 24.4% aged 25–44, 18.9% aged 45–64, and 13.4% who were aged 65 years or older. The median age
150-618: A group of Hohokam structures dating to the Classic Period (1150–1450 CE ). The national monument consists of the ruins of multiple structures surrounded by a compound wall constructed by the ancient people of the Hohokam period, who farmed the Gila Valley in the early 13th century. "Archeologists have discovered evidence that the ancient Sonoran Desert people who built the Casa Grande also developed wide-scale irrigation farming and extensive trade connections which lasted over
180-508: A thousand years until about 1450 CE . "Casa Grande" is Spanish for "big house" ( Siwañ Wa'a Ki: in O'odham ); these names refer to the largest structure on the site, which is what remains of a four-story structure that may have been abandoned by 1450. The structure is made of caliche , and has managed to survive the extreme weather conditions for about seven centuries. The large house consists of outer rooms surrounding an inner structure. The outer rooms are all three stories high, while
210-414: Is infrequent, occurring 2–3 days per month usually following the passage of a cold front . The record low temperature for the city is 8 °F (−13 °C). Summers are long and very hot, with temperatures of 100 °F (38 °C) to 110 °F (43 °C) almost daily from the end of May until September, with temperatures above 115 °F (46 °C) not uncommon. The record high temperature for
240-520: Is just 11 miles (18 km) south of town. Coolidge features a hot desert climate ( Köppen climate classification BWh), typical of the Sonoran Desert . Winters are characterized by abundant sunshine and are typically brief and mild, consisting of daytime highs in the 65 °F (18 °C) to 75 °F (24 °C) range. Lows are usually between 35 °F (2 °C) and 45 °F (7 °C), though several freezes occur annually. Rain
270-414: Is thicker at the base and adds significant strength. Noticeable horizontal cracks define the breaks between courses on the thick outer walls. The process consisted of using damp adobe to form the walls and then waiting for it to dry, and then building it up with more adobe. Casa Grande contained a ball court much like that found at Pueblo Grande de Nevada . Father Eusebio Kino was the first European to view
300-565: Is when the area's status as the hub of the Arizona cotton industry was solidified and led to the incorporation of Coolidge as a city in 1945. Up until the 1950s, the city's economy was completely dependent on mining and cotton. It has since diversified to include manufacturing, regional trade , and services for agricultural producers and farm families. In 2019, Nikola Motor Company purchased 389 acres (157 ha) in Coolidge and operates
330-582: The Bureau of American Ethnology , until funds ran out. Proclaimed Casa Grande Reservation on June 22, 1892 by Executive Order 28-A of President Benjamin Harrison , 480 acres around the ruins became the first prehistoric and cultural reserve in the United States. It was then re-designated a national monument by President Woodrow Wilson on August 3, 1918. As with all historical areas administered by
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#1732773360991360-715: The Central Arizona Valley Institute of Technology . The area containing what is now the City of Coolidge was occupied by the Hohokam , an indigenous ancient Sonoran Desert people who built a massive compound consisting many of caliche structures and remained in the area for over 1,000 years. The only remaining and preserved structure from this compound is the Casa Grande Ruins National Monument. The modern history of
390-413: The Gila Valley in the early 13th century. "Archeologists have discovered evidence that the ancient Sonoran Desert people who built the Casa Grande also developed wide-scale irrigation farming and extensive trade connections which lasted over a thousand years until about 1450 CE . "Casa Grande" is Spanish for "big house" ( Siwañ Wa'a Ki: in O'odham ); these names refer to the largest structure on
420-748: The National Park Service , Casa Grande was listed on the National Register of Historic Places on October 15, 1966. Between 1937 and 1940 the Civilian Conservation Corps built several adobe buildings to serve as housing and administrative offices for the national monument. The adobe buildings, constructed using traditional methods, continue in use today and are now listed on the National Register of Historic Places. Because of careful conservation,
450-539: The Cotton Express, which provides local bus service. The City of Coolidge also operates Central Arizona Regional Transit (CART), which provides transportation between Florence , Coolidge, Central Arizona College and Casa Grande . The town was home to a station for Amtrak ; it closed in June 1996. The Coolidge Municipal Airport , which has two asphalt runways , is located 5 miles (8.0 km) southeast of
480-496: The Hohokam complex in November 1694 and named it Casa Grande. Graffiti from 19th-century passers-by is scratched into its walls; though this is now illegal. Casa Grande now has a distinctive modern roof covering built in 1932. In 1891, the monument underwent repairs supervised by Cosmos Mindeleff of the Bureau of American Ethnology , until funds ran out. Proclaimed Casa Grande Reservation on June 22, 1892 by Executive Order 28-A of President Benjamin Harrison , 480 acres around
510-624: The Picacho Mountains are visible to the southeast. Arizona State Route 87 and Arizona State Route 287 pass through the town, providing connections to the Phoenix metropolitan area , Casa Grande , and Eloy . Interstate 10 is located approximately 10 miles (16 km) to the west. Coolidge is 56 miles (90 km) southeast of Phoenix , 69 miles (111 km) northwest of Tucson , 21 miles (34 km) northeast of Casa Grande and 11 miles southwest of Florence . Picacho Reservoir
540-492: The city and had 56,050 aircraft operations in the yearly period ending April 2, 2020. The closest major airports to Coolidge are Phoenix Sky Harbor International Airport and Tucson International Airport . Casa Grande Shuttle provides an airport shuttle to Sky Harbor. Casa Grande Ruins National Monument Casa Grande Ruins National Monument ( O'odham : Siwañ Waʼa Ki: or Sivan Vahki ), in Coolidge, Arizona , located northeast of Casa Grande, Arizona , preserves
570-537: The city is 123 °F (51 °C). Summertime lows are usually above 70 °F (21 °C), with occasional periods of lows above 80 °F (27 °C). Coolidge is affected by the North American Monsoon , which brings brief heavy downpours and gusty winds in the second half of summer. Severe events can sometimes cause haboobs and flash flooding . As of the census of 2000, there were 7,786 people, 2,585 households, and 1,938 families residing in
600-571: The city is centered around agriculture, particularly cotton. Coolidge was founded in 1925 when R.J. Jones laid out an 80 acres (32 ha) site during the construction of the Coolidge Dam on the nearby Gila River , which was completed in 1930. Both the dam and the townsite were named for Calvin Coolidge , the 30th President of the United States. The dam made the sandy soil native to the area into very rich farmland , and soon vast expanses of desert were plowed and acres of cotton were planted. This
630-598: The city. The population density was 1,549.1 inhabitants per square mile (598.1/km ). There were 3,212 housing units at an average density of 639.1 per square mile (246.8/km ). The racial makeup of the city was 57.9% White , 8.3% Black or African American , 5.6% Native American , 0.7% Asian , 0.1% Pacific Islander , 23.6% from other races , and 3.8% from two or more races. 39.2% of the population were Hispanic or Latino of any race. There were 2,585 households, out of which 38.5% had children under age 18 living with them, 48.8% were married couples living together, 19.3% had
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#1732773360991660-463: The early 21st century, a pair of great horned owls took up residence in the rafters of the Olmsted shelter. The current protective structure covering the "Great House" replaced a wooden similar structure built to protect it in 1903. Due to the fragile nature of the "Great House," visitors to the site are not permitted inside. To protect its integrity, observation by visitors is only permitted outside
690-423: The inner structure is four stories high. The structures were constructed using traditional adobe processes. The wet adobe is thicker at the base and adds significant strength. Noticeable horizontal cracks define the breaks between courses on the thick outer walls. The process consisted of using damp adobe to form the walls and then waiting for it to dry, and then building it up with more adobe. Casa Grande contained
720-409: The national monument. The adobe buildings, constructed using traditional methods, continue in use today and are now listed on the National Register of Historic Places. Because of careful conservation, the physical appearance of Casa Grande Ruins has hardly changed since the 1940s. In 1932, a ramada to shelter the ruins from weathering was built by Boston architect Frederick Law Olmsted Jr. In
750-453: The physical appearance of Casa Grande Ruins has hardly changed since the 1940s. In 1932, a ramada to shelter the ruins from weathering was built by Boston architect Frederick Law Olmsted Jr. In the early 21st century, a pair of great horned owls took up residence in the rafters of the Olmsted shelter. The current protective structure covering the "Great House" replaced a wooden similar structure built to protect it in 1903. Due to
780-509: The poverty line, including 30.9% of those under age 18 and 20.5% of those age 65 or over. In 2010, Coolidge had a population of 11,825. The racial and ethnic composition of the population was 43.6% non-Hispanic white, 7.3% non-Hispanic black, 0.5% Hispanic blacks, 3.8% non-Hispanic Native American, 1.9% Hispanic or Latino Native American, 1.0% Asian, 0.1% Pacific Islander, 0.1% non-Hispanic from some other race, 5.0% from two or more races and 42.0% Hispanic or Latino. The City of Coolidge operates
810-480: The ruins became the first prehistoric and cultural reserve in the United States. It was then re-designated a national monument by President Woodrow Wilson on August 3, 1918. As with all historical areas administered by the National Park Service , Casa Grande was listed on the National Register of Historic Places on October 15, 1966. Between 1937 and 1940 the Civilian Conservation Corps built several adobe buildings to serve as housing and administrative offices for
840-463: The site, which is what remains of a four-story structure that may have been abandoned by 1450. The structure is made of caliche , and has managed to survive the extreme weather conditions for about seven centuries. The large house consists of outer rooms surrounding an inner structure. The outer rooms are all three stories high, while the inner structure is four stories high. The structures were constructed using traditional adobe processes. The wet adobe
870-667: The structure. Notes Bibliography Coolidge, Arizona Coolidge is a city in Pinal County , Arizona , United States. According to the 2020 census , the city's population is 13,218. Coolidge is home of the Casa Grande Ruins National Monument . The monument was the first historic site to receive protected status by the United States Government in 1892. Coolidge is also home to both Central Arizona College and
900-406: Was 31 years. For every 100 females, there were 93.2 males. For every 100 females age 18 and over, there were 88.1 males. The median income for a household in the city was $ 29,049, and the median income for a family was $ 33,536. Males had a median income of $ 29,159 versus $ 21,472 for females. The per capita income for the city was $ 13,663. About 20.9% of families and 24.7% of the population were below
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