 The population density was 3.56/sqmi (1.37/km²).There were 4,708 housing units at an average density of 3.24/sqmi (1.25/km²).The racial makeup of the county was 89.45% White, 7.59% Native American, 0.33% Asian, 0.29% Black or African American, 0.04% Pacific Islander, 0.25% from other races, and 2.05% from two or more races.