As of the 2000 census, the county had 89,498 people, 30,692 households, and 23,970 families. The population density was 251 people per square mile (97/km2). There were 31,609 housing units at an average density of 89 per square mile (34/km2). The county's racial makeup was 93.65% White, 0.92% Black or African American, 0.77% Native American, 2.17% Asian, 0.03% Pacific Islander, 1.24% from other races, and 1.21% from two or more races. 2.66% of the population were Hispanic or Latino of any race. 39.6% were of German, 12.6% Norwegian, 8.3% Irish and 5.1% Swedish ancestry.