At the 2000 census, there were 824,008 people, 319,040 households, and 210,566 families residing in the county. The population density was 1,361 per square mile (525/km2). There were 340,732 housing units at an average density of 563 per square mile (217/km2). The racial makeup of the county was 79.40% White, 11.32% Black or African American, 0.25% Native American, 2.33% Asian, 0.04% Pacific Islander, 4.51% from other races, and 2.16% from two or more races. 10.09% of the population were Hispanic or Latino of any race. 24.5% were of Italian, 12.3% Irish, 6.0% Polish, 5.7% English and 5.6% German ancestry according to Census 2000. 8.73% of the population reported speaking Spanish at home, while 2.05% speak Italian.