 The population density was 36.2 per square mile (14.0/km2).There were 680 housing units at an average density of 14.9 per square mile (5.8/km2).The racial makeup of the township was 95.09% White, 0.12% African American, 2.67% Native American, 0.36% Asian, 0.24% from other races, and 1.52% from two or more races.