Trondhjem Township, Otter Tail County, Minnesota  Trondhjem Township is a township in Otter Tail County, Minnesota, United States. The population was 171 at the 2000 census. Trondhjem Township was organized in 1873, and named after Trondhjem, in Norway. According to the United States Census Bureau, the township has a total area of 33.9 square miles (87.8 km²), of which 33.1 square miles (85.7 km²) of it is land and 0.8 square miles (2.2 km²) of it (2.48%) is water. At the 2000 census there were 171 people, 62 households, and 51 families living in the township. The population density was 5.2 people per square mile (2.0/km²). There were 68 housing units at an average density of 2.1/sq mi (0.8/km²). The racial makeup of the township was 98.83% White, 0.58% Asian, and 0.58% from two or more races. Hispanic or Latino of any race were 0.58%. Of the 62 households 33.9% had children under the age of 18 living with them, 74.2% were married couples living together, 4.8% had a female householder with no husband present, and 17.7% were non-families. 14.5% of households were one person and 6.5% were one person aged 65 or older. The average household size was 2.76 and the average family size was 3.04. The age distribution was 28.1% under the age of 18, 7.0% from 18 to 24, 25.1% from 25 to 44, 25.1% from 45 to 64, and 14.6% 65 or older. The median age was 38 years. For every 100 females, there were 119.2 males. For every 100 females age 18 and over, there were 105.0 males. The median household income was $26,750 and the median family income was $28,750. Males had a median income of $22,500 versus $12,083 for females. The per capita income for the township was $18,710. None of the families and 1.9% of the population were living below the poverty line.