Maricopa is a city in Pinal County, Arizona, United States, thirty miles south of Phoenix in the Gila River Valley. As of 2007, its population is estimated to be 37,863, an increase of 36,823 over the 2000 census figure of 1,040. This makes it the second-largest city in the county and Arizona's nineteenth-largest city. Maricopa's annexation plans during the next decade are likely to result in major growth in both population and area .
The city was officially incorporated on October 15, 2003, becoming the 88th incorporated city in Arizona. The city's first special census was completed Saturday, March 13, 2004, and showed a population of 4,998.
Maricopa was the subject of a major article in the New York Times on April 6, 2008 and the town was featured on ABC's Nightline on May 7, 2008, during its "Realty Check" segment. The story dealt with the drastic effect of the subprime mortgage crisis and housing market correction on the city. In the story, Maricopa was referred to as the "poster child of the housing crisis".
The topography in Maricopa is flat with several mountain ranges 10 to 20 miles away. The elevation of Maricopa is 1190 feet.
There were 292 households out of which 46.6% had children under the age of 18 living with them, 53.1% were married couples living together, 14.7% had a female householder with no husband present, and 22.3% were non-families. 13.7% of all households were made up of individuals and 3.1% had someone living alone who was 65 years of age or older. The average household size was 3.56 and the average family size was 3.85.
In the CDP the population was spread out with 34.3% under the age of 18, 12.1% from 18 to 24, 30.3% from 25 to 44, 16.3% from 45 to 64, and 7.0% who were 65 years of age or older. The median age was 28 years. For every 100 females there were 122.7 males. For every 100 females age 18 and over, there were 125.4 males.
The median income for a household in the CDP was $30,625, and the median income for a family was $32,222. Males had a median income of $26,339 versus $16,750 for females. The per capita income for the CDP was $9,175. About 19.1% of families and 23.4% of the population were below the poverty line, including 31.0% of those under age 18 and none of those age 65 or over.