|City of Maricopa|
Northern city limit of Maricopa; the fire in the center is a gas flare from an active oil well
Location in Kern County and the state of California
|Incorporated||July 25, 1911|
|• State Senator||Jean Fuller (R)|
|• Assemblymember||Shannon Grove (R)|
|• U. S. Rep.||Kevin McCarthy (R)|
|• Total||1.502 sq mi (3.890 km2)|
|• Land||1.502 sq mi (3.890 km2)|
|• Water||0 sq mi (0 km2) 0%|
|Elevation||883 ft (269 m)|
|• Density||770/sq mi (300/km2)|
|Time zone||PST (UTC-8)|
|• Summer (DST)||PDT (UTC-7)|
|GNIS feature IDs||1652749, 2411033|
Maricopa is a city in Kern County, California. Maricopa is located 6.5 miles (10 km) south-southeast of Taft, at an elevation of 883 feet (269 m). The population was 1,154 at the 2010 census, up from 1,111 at the 2000 census. Maricopa lies at the junction of Route 166 and Route 33. The Carrizo Plain is located to the northwest, and the enormous Midway-Sunset Oil Field, the third largest oil field in the United States, is adjacent on the north and east.
According to the United States Census Bureau, the city has a total area of 1.5 square miles (3.9 km2), all of it land. Maricopa is in the extreme southwestern corner of the San Joaquin Valley, on the first rise of land into the foothills of the Coast Ranges, with the Temblor Mountains, following the San Andreas Fault, trending northwest of town, and the San Emigdio Mountains to the southeast. The climate of the area is hot and semi-arid, with summertime temperatures routinely exceeding 100 degrees Fahrenheit. Freezes occur in the winter, with the mean period without freezes being about 275 days. About six inches of rain falls annually in Maricopa.
The 2010 United States Census reported that Maricopa had a population of 1,154. The population density was 768.4 people per square mile (296.7/km²). The racial makeup of Maricopa was 958 (83.0%) White, 1 (0.1%) African American, 27 (2.3%) Native American, 16 (1.4%) Asian, 2 (0.2%) Pacific Islander, 112 (9.7%) from other races, and 38 (3.3%) from two or more races. Hispanic or Latino of any race were 232 persons (20.1%).
The Census reported that 1,154 people (100% of the population) lived in households, 0 (0%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized.
There were 414 households, out of which 157 (37.9%) had children under the age of 18 living in them, 191 (46.1%) were opposite-sex married couples living together, 66 (15.9%) had a female householder with no husband present, 34 (8.2%) had a male householder with no wife present. There were 50 (12.1%) unmarried opposite-sex partnerships, and 2 (0.5%) same-sex married couples or partnerships. 91 households (22.0%) were made up of individuals and 33 (8.0%) had someone living alone who was 65 years of age or older. The average household size was 2.79. There were 291 families (70.3% of all households); the average family size was 3.20.
The population was spread out with 306 people (26.5%) under the age of 18, 112 people (9.7%) aged 18 to 24, 252 people (21.8%) aged 25 to 44, 349 people (30.2%) aged 45 to 64, and 135 people (11.7%) who were 65 years of age or older. The median age was 39.4 years. For every 100 females there were 101.7 males. For every 100 females age 18 and over, there were 103.4 males.
There were 466 housing units at an average density of 310.3 per square mile (119.8/km²), of which 268 (64.7%) were owner-occupied, and 146 (35.3%) were occupied by renters. The homeowner vacancy rate was 1.8%; the rental vacancy rate was 9.8%. 704 people (61.0% of the population) lived in owner-occupied housing units and 450 people (39.0%) lived in rental housing units.
As of the census of 2000, there were 1,111 people, 404 households, and 302 families residing in the city. The population density was 739.7 people per square mile (286.0/km²). There were 460 housing units at an average density of 306.3 per square mile (118.4/km²). The racial makeup of the city was 85.87% White, 1.98% Native American, 0.45% Asian, 8.91% from other races, and 2.79% from two or more races. 13.50% of the population were Hispanic or Latino of any race.
There were 404 households out of which 34.2% had children under the age of 18 living with them, 59.2% were married couples living together, 11.1% had a female householder with no husband present, and 25.2% were non-families. 23.5% of all households were made up of individuals and 9.2% had someone living alone who was 65 years of age or older. The average household size was 2.75 and the average family size was 3.22.
In the city the population was spread out with 29.8% under the age of 18, 7.0% from 18 to 24, 25.8% from 25 to 44, 26.1% from 45 to 64, and 11.3% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 111.6 males. For every 100 females age 18 and over, there were 105.3 males.
The median income for a household in the city was $27,917, and the median income for a family was $31,761. Males had a median income of $31,161 versus $23,333 for females. The per capita income for the city was $15,692. About 15.6% of families and 21.3% of the population were below the poverty line, including 27.2% of those under age 18 and 4.5% of those age 65 or over.
Maricopa Fire Department was established in 1910 with Chief F. W. Ball serving as the first fire chief. Maricopa Hospital opened on 22 April 1911 and the city was incorporated on July 25, 1911. Gary Biggerstaff was the chief of police when budget problems forced the city to close its police department in 1998. The Kern County Sheriff's Department provided police services to the citizens of Maricopa from 1998 until 2006 when the city reopened its police department in the old building.
As reported in the Los Angeles Times on July 4, 2011, the Maricopa Police Department has become embroiled in a local controversy playing out through large signs posted on the city's main thoroughfare. The police have been accused of racial profiling and "over-enforcement" regarding traffic violations and frequent towing of vehicles driven by drivers without proof of insurance or with license or license plate infractions. In mid-2011, American Civil Liberties Union lawyer Jennie Pasquarella is quoted as saying, "Maricopa has been a shining example of impoundments gone wrong," and "They're essentially creating a racket to steal people's cars." 
Police Chief Derek Merritt and other city officials have denied the charges.
- "California Cities by Incorporation Date" (WORD). California Association of Local Agency Formation Commissions. Retrieved April 12, 2013.
- "Senators". State of California. Retrieved April 12, 2013.
- "Members Assembly". State of California. Retrieved April 12, 2013.
- "California's 23rd Congressional District - Representatives & District Map". Civic Impulse, LLC. Retrieved April 12, 2013.
- "2010 Census U.S. Gazetteer Files – Places – California". United States Census Bureau.
- "Maricopa". Geographic Names Information System. United States Geological Survey.
- Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Clovis, Calif.: Word Dancer Press. p. 1068. ISBN 1-884995-14-4.
- "Ecoregion description". U.S. Forest Service. Archived from the original on 2005-03-11. Retrieved 2014-02-22.
- "Annual Estimates of the Resident Population for Incorporated Places: April 1, 2010 to July 1, 2014". Retrieved June 4, 2015.
- "Census of Population and Housing". Census.gov. Retrieved June 4, 2015.
- "2010 Census Interactive Population Search: CA - Maricopa city". U.S. Census Bureau. Retrieved July 12, 2014.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.