 The population density was 21 people per square mile (8/km²).There were 15,861 housing units at an average density of 9 per square mile (4/km²).The racial makeup of the county was 95.47% White, 0.28% Black or African American, 2.72% Native American, 0.40% Asian, 0.09% Pacific Islander, 0.18% from other races, and 0.86% from two or more races.