As of the census of 2000, there were 857,183 people, 335,098 households, and 222,505 families living in the county. The population density was 1,166 people per square mile (450/km2). There were 353,022 housing units at an average density of 480 per square mile (185/km2). The racial makeup of the county was 76.90% White, 11.66% Black or African American, 0.23% Native American, 2.42% Asian, 0.04% Pacific Islander, 6.43% from other races, and 2.31% from two or more races. 11.55% of the population were Hispanic or Latino of any race. 15.2% were of Italian, 11.2% Irish, 9.1% Polish, 6.5% English, 5.7% French and 5.3% German ancestry. 78.4% spoke English, 10.3% Spanish, 2.6% Polish, 1.9% French and 1.6% Italian as their first language.