Manitowoc County, Wisconsin  Manitowoc County is a county in the U.S. state of Wisconsin. As of the 2010 census, the population was 81,442. Its county seat is Manitowoc. The county was created in 1836 prior to Wisconsin's statehood and organized in 1848. Manitowoc County comprises the Manitowoc, WI Micropolitan Statistical Area. According to the U.S. Census Bureau, the county has a total area of , of which is land and (61%) is water. Manitowoc County Airport (KMTW) serves the county and surrounding communities. As of the census of 2000, there were 82,887 people, 32,721 households, and 22,348 families residing in the county. The population density was 140 people per square mile (54/km²). There were 34,651 housing units at an average density of 59 per square mile (23/km²). The racial makeup of the county was 95.90% White, 0.30% Black or African American, 0.43% Native American, 1.98% Asian, 0.04% Pacific Islander, 0.60% from other races, and 0.76% from two or more races. 1.62% of the population were Hispanic or Latino of any race. 53.7% were of German, 7.3% Polish, 5.3% Czech and 5.0% American ancestry. 95.2% spoke English, 1.8% Spanish, 1.3% Hmong and 1.1% German as their first language. There were 32,721 households out of which 31.50% had children under the age of 18 living with them, 57.10% were married couples living together, 7.50% had a female householder with no husband present, and 31.70% were non-families. 26.80% of all households were made up of individuals and 12.10% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 3.04. In the county, the population was spread out with 25.50% under the age of 18, 7.60% from 18 to 24, 28.20% from 25 to 44, 23.00% from 45 to 64, and 15.70% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 98.20 males.