 The population density was 566.0 people per square mile (218.5/km²).There were 8,147 housing units at an average density of 207.2 per square mile (80.0/km²).The racial makeup of the township was 96.74% White, 0.76% African American, 0.12% Native American, 1.47% Asian, 0.04% Pacific Islander, 0.28% from other races, and 0.59% from two or more races.