Sullivan Township, Polk County, Minnesota

According to the United States Census Bureau, the township has a total area of 35.7 square miles (92.5 km²), of which 35.6 square miles (92.3 km²) of it is land and 0.1 square miles (0.2 km²) of it (0.25%) is water.

At the 2000 census there were 174 people in 61 households, including 48 families, in the township. The population density was 4.9 people per square mile (1.9/km²). There were 64 housing units at an average density of 1.8/sq mi (0.7/km²). The racial makeup of the township was 98.85% White, 0.57% Native American, and 0.57% from two or more races.[1] Of the 61 households 44.3% had children under the age of 18 living with them, 72.1% were married couples living together, 1.6% had a female householder with no husband present, and 19.7% were non-families. 16.4% of households were one person and 8.2% were one person aged 65 or older. The average household size was 2.85 and the average family size was 3.18.

The age distribution was 28.7% under the age of 18, 7.5% from 18 to 24, 31.0% from 25 to 44, 21.8% from 45 to 64, and 10.9% 65 or older. The median age was 37 years. For every 100 females, there were 104.7 males. For every 100 females age 18 and over, there were 113.8 males.

The median household income was $45,250 and the median family income was $54,375. Males had a median income of $29,167 versus $22,750 for females. The per capita income for the township was $16,360. None of the families and 2.2% of the population were living below the poverty line, including no under eighteens and 10.5% of those over 64.