White Hispanics): 64.6% Black (non-Hispanic) (14.8% when including Black Hispanics): 14.2% Hispanic or Latino of any race: 17.7% Asian: 1.6% Two or more races: 2.4% American Indian and Alaska Native: 0.4% Native Hawaiian and Other Pacific Islander: 0.1% Other Races: 5.5% In 2010, the largest ancestry groups were: 12.2% German, 11.6% American, 11.2% English, 10.8% Irish, 7.6% Mexican, 5.8% Puerto Rican, 4.1% Italian, 2.6% French, 2.1% Polish, 2.0% Scotch-Irish, 1.8% Scottish, 1.5% Dutch, 1.2% Cuban There were 227,485 households, out of which 27.3% had children under the age of 18 living with them, 51.1% were married couples living together, 13.7% had a female householder with no husband present, and 30.0% were non-families. 23.8% of all households were made up of individuals, and 11.0% (3.4% male and 7.6% female) had someone living alone who was 65 years of age or older. The average household size was 2.59 and the average family size was 3.05. In the county, the population was spread out, with 23.5% under the age of 18, 8.8% from 18 to 24, 24.0% from 25 to 44, 25.6% from 45 to 64, and 18.0% who were 65 years of age or older. The median age was 39.8 years. For every 100 females there were 96.3 males. For every 100 females age 18 and over, there were 93.7 males. The median income for a household in the county was $43,946, and the median income for a family was $51,395. Males had a median income of $37,768 versus $30,655 for females. The per capita income for the county was $21,881. About 11.5% of families and 15.2% of the population were below the poverty line, including 23.5% of those under age 18 and 8.7% of those aged 65 or over. In 2010, 10.7% of the county's population was foreign-born, with 37.8% being naturalized American citizens. Of foreign-born residents, 70.4% were born in Latin America, 11.5% were born in Europe, 10.2% born in Asia, 4.9% in North America, 2.6% born in Africa, and 0.4% were born in Oceania. 2000 Census As of the census of 2000, there were 483,924 people, 187,233 households, and 132,373 families residing in the county. The population density was 258 people per square mile (100/km2). There were 226,376 housing units at an average density of 121 per square mile (47/km2). The racial makeup of the county was 79.58% White (74.6% were Non-Hispanic White), 13.54% Black or African American, 0.38%