2020 census As of the
2020 census, the county had a population of 655,070. Of the residents, 23.4% were under the age of 18 and 13.8% were 65 years of age or older; the median age was 36.6 years. For every 100 females there were 98.6 males, and for every 100 females age 18 and over there were 96.6 males. 97.9% of residents lived in urban areas and 2.1% lived in rural areas. The racial makeup of the county was 60.5% White, 10.8%
Black or African American, 1.0%
American Indian and Alaska Native, 6.5%
Asian, 0.3%
Native Hawaiian and
Pacific Islander, 8.3% from some other race, and 12.6% from
two or more races.
Hispanic or Latino residents of any race comprised 20.7% of the population. There were 250,206 households in the county, of which 32.5% had children under the age of 18 living with them and 26.0% had a female householder with no spouse or partner present. About 26.4% of all households were made up of individuals and 9.0% had someone living alone who was 65 years of age or older. There were 262,493 housing units, of which 4.7% were vacant. Among occupied housing units, 62.5% were owner-occupied and 37.5% were renter-occupied. The homeowner vacancy rate was 0.9% and the rental vacancy rate was 7.3%.
2000 census As of the
census of 2000, 487,967 people, 190,909 households, and 125,809 families were residing in the county. The
population density was . The 196,835 housing units averaged . The
racial makeup of the county was 79.93% White, 7.67% African American, 0.66% Native American, 3.95% Asian, 0.12% Pacific Islander, 4.51% from other races, and 3.16% from two or more races. Hispanics or Latinos of any race made up 11.81% of the population. Of the 190,909 households, 34.90% had children under the age of 18 living with them, 51.20% were married couples living together, 10.60% had a female householder with no husband present, and 34.10% were not families. About 27.00% of all households were made up of individuals, and 5.90% had someone living alone who was 65 years of age or older. The average household size was 2.53, and the average family size was 3.11. In the county, the age distribution was 26.70% under 18, 8.60% from 18 to 24, 33.10% from 25 to 44, 23.00% from 45 to 64, and 8.60% who were 65 or older. The median age was 34 years. For every 100 females, there were 97.10 males. For every 100 females age 18 and over, there were 94.20 males. The median income for a household was $53,570, and for a family was $63,875. Males had a median income of $41,601 versus $31,612 for females. The
per capita income for the county was $28,147. About 4.20% of families and 5.80% of the population were below the
poverty line, including 7.00% of those under age 18 and 5.10% of those age 65 or over. ==Education==