As of the census of 2000, there were 23,003 people, 9,376 households, and 5,925 families residing in the city. The population density was 3,033 per square mile (7,855/km2). There were 9,885 housing units at an average density of 1,303.3 per square mile (503.5/km2). By 2008, the city's population had increased to 33,239. According to U.S. Census figures from the 2006-2008 American Community Survey, the racial composition of the city's population was 93.6% white, 0.2% black, 1.6% American Indian, 1.1% Asian, 1.2% other race, and 2.3% two or more races. Hispanics or Latinos, who may be of any race, formed 7.2% of the city's population.