2010 census
As of the census of 2010, there were 8,437 people, 3,188 households, and 2,152 families living in the county. [11] The population density was 4.6 inhabitants per square mile (1.8 inhabitants/km2). There were 4,372 housing units at an average density of 2.4 units per square mile (0.93 units/km2). [12] The racial makeup of the county was 77.2% white, 2.3% American Indian, 1.1% black or African American, 0.5% Asian, 0.1% Pacific islander, 15.0% from other races, and 3.8% from two or more races. Those of Hispanic or Latino origin made up 47.9% of the population. [11] In terms of ancestry, 12.9% were English, 12.1% were German, 10.6% were Irish, and 1.6% were American. [13]
Of the 3,188 households, 37.5% had children under the age of 18 living with them, 49.5% were married couples living together, 9.6% had a female householder with no husband present, 32.5% were non-families, and 27.8% of all households were made up of individuals. The average household size was 2.64 and the average family size was 3.21. The median age was 34.8 years. [11]
The median income for a household in the county was $48,696 and the median income for a family was $51,729. Males had a median income of $50,446 versus $34,171 for females. The per capita income for the county was $21,281. About 9.4% of families and 13.5% of the population were below the poverty line, including 17.8% of those under age 18 and 13.2% of those age 65 or over. [14]
2000 census
As of the census of 2000, there were 8,547 people, 3,117 households, and 2,266 families living in the county. The population density was 5 people per square mile (1.9 people/km2). There were 3,744 housing units at an average density of 2 units per square mile (0.77 units/km2). The racial makeup of the county was 74.2% White, 0.5% Black or African American, 1.7% Native American, 0.2% Asian, <0.1% Pacific Islander, 20.0% from other races, and 3.5% from two or more races. 43.1% of the population were Hispanic or Latino of any race. 25.2% reported speaking Spanish at home. [15]
There were 3,117 households, out of which 39.2% had children under the age of 18 living with them, 58.3% were married couples living together, 9.0% had a female householder with no husband present, and 27.3% were non-families. 24.5% of all households were made up of individuals, and 7.3% had someone living alone who was 65 years of age or older. The average household size was 2.73 and the average family size was 3.26.
In the county, the population was spread out, with 31.7% under the age of 18, 7.5% from 18 to 24, 28.2% from 25 to 44, 22.6% from 45 to 64, and 9.9% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 109.2 males. For every 100 females age 18 and over, there were 108.0 males.
The median income for a household in the county was $39,384, and the median income for a family was $43,523. Males had a median income of $38,952 versus $23,333 for females. The per capita income for the county was $15,814. About 8.0% of families and 9.9% of the population were below the poverty line, including 11.1% of those under age 18 and 8.7% of those age 65 or over.
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