As of the census of 2000, there were 28,006 people, 11,816 households, and 7,420 families residing in the city. The population density was 5,278.1 per square mile (2,036.4/km2). There were 12,303 housing units at an average density of 2,318.7 per square mile (894.6/km2). The racial makeup of the city was 96.32% White, 0.52% African American, 0.49% Native American, 0.33% Asian, 0.03% Pacific Islander, 0.72% from other races, and 1.59% from two or more races. Hispanic or Latino of any race were 2.91% of the population. Residents are predominantly of Polish descent.