Nowthen is a city in Anoka County, Minnesota, United States. The population was 4,443 at the 2010 census.
According to the United States Census Bureau, the city has a total area of 35.10 square miles (90.91 km), of which, 33.56 square miles (86.92 km) is land and 1.54 square miles (3.99 km) is water. Nowthen is located in the northwest part of Anoka County.
Minnesota State Highway 47 and County Road 22 are two of the main routes in the community.
Nearby places include St. Francis, Oak Grove, Andover, Ramsey, and Elk River. Nowthen is located 12 miles north-northwest of the city of Anoka.
As of the census of 2010, there were 4,443 people, 1,450 households, and 1,227 families residing in the city. The population density was 132.4 inhabitants per square mile (51.1/km). There were 1,494 housing units at an average density of 44.5 per square mile (17.2/km). The racial makeup of the city was 96.2% White, 0.9% African American, 0.5% Native American, 1.3% Asian, 0.1% from other races, and 0.9% from two or more races. Hispanic or Latino of any race were 1.0% of the population.
There were 1,450 households of which 42.3% had children under the age of 18 living with them, 74.6% were married couples living together, 5.3% had a female householder with no husband present, 4.7% had a male householder with no wife present, and 15.4% were non-families. 11.4% of all households were made up of individuals and 3% had someone living alone who was 65 years of age or older. The average household size was 3.04 and the average family size was 3.27.
The median age in the city was 39.9 years. 28.3% of residents were under the age of 18; 8.5% were between the ages of 18 and 24; 23.2% were from 25 to 44; 33% were from 45 to 64; and 7% were 65 years of age or older. The gender makeup of the city was 52.1% male and 47.9% female.
As of the census of 2000, there were 3,557 people, 1,123 households, and 985 families residing in the township. The population density was 105.3 people per square mile (40.6/km²). There were 1,136 housing units at an average density of 33.6/sq mi (13.0/km²). The racial makeup of the township was 98.54% White, 0.20% African American, 0.28% Native American, 0.17% Asian, 0.14% from other races, and 0.67% from two or more races. Hispanic or Latino of any race were 0.59% of the population.
There were 1,123 households out of which 47.4% had children under the age of 18 living with them, 80.3% were married couples living together, 3.9% had a female householder with no husband present, and 12.2% were non-families. 8.4% of all households were made up of individuals and 2.0% had someone living alone who was 65 years of age or older. The average household size was 3.16 and the average family size was 3.36.
In the township the population was spread out with 32.7% under the age of 18, 5.8% from 18 to 24, 34.5% from 25 to 44, 21.9% from 45 to 64, and 5.0% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 109.9 males. For every 100 females age 18 and over, there were 106.8 males.
The median income for a household in the township was $63,819, and the median income for a family was $65,843. Males had a median income of $42,374 versus $31,454 for females. The per capita income for the township was $21,569. About 4.1% of families and 4.6% of the population were below the poverty line, including 6.0% of those under age 18 and none of those age 65 or over.