2020 census As of the
2020 census, the county had a population of 345,920. Of the residents, 24.0% were under the age of 18 and 16.8% were 65 years of age or older; the median age was 37.1 years. For every 100 females there were 99.2 males, and for every 100 females age 18 and over there were 97.3 males. 84.6% of residents lived in urban areas and 15.4% lived in rural areas. The racial makeup of the county was 67.4% White, 1.2%
Black or African American, 2.0%
American Indian and Alaska Native, 2.2%
Asian, 1.1%
Native Hawaiian and
Pacific Islander, 13.8% from some other race, and 12.3% from
two or more races;
Hispanic or Latino residents of any race comprised 27.7% of the population. Non-Hispanic whites alone made up 61.8% of the population, while non-Hispanic African Americans were 1.1%, non-Hispanic Native Americans 0.9%, non-Hispanic Asians 2.1%, and non-Hispanic people reporting two or more races 4.9%. The population density was . There were 120,948 housing units at an average density of . The racial makeup of the county was 78.2% white, 1.9% Asian, 1.6% American Indian, 1.1% black or African American, 0.7% Pacific islander, 12.6% from other races, and 3.9% from two or more races. Those of Hispanic or Latino origin made up 24.3% of the population. Of the 112,957 households, 35.5% had children under the age of 18 living with them, 50.4% were married couples living together, 12.4% had a female householder with no husband present, 31.8% were non-families, and 25.0% of all households were made up of individuals. The average household size was 2.70 and the average family size was 3.23. The median age was 35.1 years.
2000 census As of the
2000 census, there were 284,834 people, 101,641 households, and 70,437 families living in the county. The population density was . There were 108,174 housing units at an average density of . The racial makeup of the county was 81.62%
White, 0.89%
Black or
African American, 1.44%
Native American, 1.75%
Asian, 0.36%
Pacific Islander, 10.58% from
other races, and 3.35% from two or more races. 17.10% of the population were
Hispanic or
Latino of any race. 18.4% were of
German, 9.2%
English, 8.2%
American and 7.4%
Irish ancestry. 80.8% spoke only
English at home, while 14.8% spoke
Spanish and 1.4%
Russian. There were 101,641 households, out of which 34.50% had children under the age of 18 living with them, 53.70% were
married couples living together, 11.00% had a female householder with no husband present, and 30.70% were non-families. 24.00% of all households were made up of individuals, and 9.50% had someone living alone who was 65 years of age or older. The average household size was 2.70 and the average family size was 3.19. In the county, 27.40% of the population was under the age of 18, 10.30% was from 18 to 24, 28.70% from 25 to 44, 21.20% from 45 to 64, and 12.40% was 65 years of age or older. The median age was 34 years. For every 100 females, there were 101.10 males. For every 100 females age 18 and over, there were 99.50 males. The median income for a household in the county was $40,314, and the median income for a family was $46,202. Males had a median income of $33,841 versus $26,283 for females. The
per capita income for the county was $18,408. About 9.60% of families and 13.50% of the population were below the
poverty line, including 18.10% of those under age 18 and 7.40% of those age 65 or over. ==Law and government==