Pima County, Arizona

Pima County is located in the south central region of the of. The county is named after the  tribe which was indigenous to the area. As of the 2006 U.S. Census estimate, the population was 946,362. The is, where nearly all of the population is centered.

Pima County contains parts of the, as well as all of the , ,  and.

The vast majority of the county population lies in and around the city of (2005 city population: 529,770), filling much of the eastern part of the county with urban development. Tucson, Arizona's second largest city, is a major commercial and academic center. Other urban areas include the Tucson suburbs of (population 39,400),  (population 26,725),  (population 13,990), and  (population 5,630), a large ring of unincorporated urban development, and the growing. The rest of the county is sparsely populated; the largest towns are, the capital of the Tohono O'odham Nation, and in the far western region of the county.

History
Pima County, one of the four original counties in Arizona, was created by the Territorial Legislature on November 9th 1864 when land acquired by the from  in 1853 became the  of the. The original county included all of from the western  to the  in the north to the Mexican international border in the south and east to the  state line. Soon thereafter, the counties of, and  were carved from the original Pima County.

Geography
According to the, the county has a total area of 29,799 (9,189 ). 23,792 km² (9,1860 sq mi) of it is land and 7 km² (3 sq mi) of it (0.03%) is water.

Adjacent Counties

 * - west
 * - north
 * - north
 * - northeast
 * - east
 * - southeast

To the south lies the State of.

Demographics
As of the of 2000, there were 843,746 people, 332,350 households, and 212,039 families residing in the county. The was 35/km² (92/sq mi). There were 366,737 housing units at an average density of 15/km² (40/sq mi). The racial makeup of the county was 75.07%, 3.03% or , 3.22% , 2.04% , 0.13% , 13.30% from , and 3.21% from two or more races. 29.34% of the population were or  of any race. 22.80% reported speaking at home.

There were 332,350 households out of which 29.20% had children under the age of 18 living with them, 47.70% were living together, 11.80% had a female householder with no husband present, and 36.20% were non-families. 28.50% of all households were made up of individuals and 9.40% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 3.06.

In the county the population was spread out with 24.60% under the age of 18, 10.90% from 18 to 24, 28.40% from 25 to 44, 21.90% from 45 to 64, and 14.20% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 95.70 males. For every 100 females age 18 and over, there were 92.70 males.

The median income for a household in the county was $36,758, and the median income for a family was $44,446. Males had a median income of $32,156 versus $24,959 for females. The for the county was $19,785. About 10.50% of families and 14.70% of the population were below the, including 19.40% of those under age 18 and 8.20% of those age 65 or over.