 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.