As of the census of 2000, there were 882,567 people, 324,232 households, and 228,259 families residing in the county. The population density was 1,410 people per square mile (545/km2). There were 339,466 housing units at an average density of 542 per square mile (209/km2). The racial makeup of the county was 79.31% White, 10.01% Black or African American, 0.20% Native American, 3.25% Asian, 0.04% Pacific Islander, 4.70% from other races, and 2.49% from two or more races. 11.88% of the population were Hispanic or Latino of any race. 17.6% were of Italian, 12.4% Irish, 6.5% German and 6.4% English ancestry.