At the time of the 2000 Census, there were 55,532 people, 23,185 households, and 14,444 families residing in the city. The population density was 2,065.2 per square mile (797.4/km2). There were 24,217 housing units at an average density of 900.6 per square mile (347.7/km2). The racial makeup of the city was 94.78% White, 3.39% Native American, 0.89% from two or more races, 0.75% Hispanic or Latino, 0.45% Asian, 0.28% Black or African American, 0.17% from other races and 0.03% Pacific Islander.