As of the census of 2000, there were 1,223,499 people, 453,602 households, and 297,562 families residing in the county. The population density was 1,267 people per square mile (489/km2). There were 474,814 housing units at an average density of 492/sq mi (190/km2). The racial makeup of the county was 64.0% White, 10.6% Black or African American, 1.09% Native American, 13.5% Asian, 0.6% Pacific Islander, 7.5% from other races, and 5.8% from two or more races. 19.3% of the population were Hispanic or Latino of any race. 10.2% were of German, 7.0% English, 6.7% Irish and 5.1% American ancestry according to Census 2000. 75.7% spoke only English at home; 10.0% spoke Spanish, 1.5% Hmong, 1.4% Chinese or Mandarin, 1.3% Vietnamese, 1.2% Tagalog and 1.2% Russian.