Rice Lake is a city in Saint Louis County, Minnesota, United States. The population was 4,095 at the 2010 census.
According to the United States Census Bureau, the township has a total area of 33.5 square miles (87 km); 32.3 square miles (84 km) is land and 1.1 square miles (2.8 km), or 3.43%, is water.
Wild Rice Lake is partially located within the city of Rice Lake.
Amity Creek and the East Branch of Amity Creek both flow through the city.
The Lester River rises in nearby Gnesen Township and flows generally southeastwardly through the city of Rice Lake and Lakewood Township, turning southward as it nears Lake Superior. The river flows into Lake Superior in eastern Duluth.
As of the census of 2000, there were 4,139 people, 1,494 households, and 1,177 families residing in the township. The population density was 127.9 people per square mile (49.4/km²). There were 1,518 housing units at an average density of 46.9/sq mi (18.1/km²). The racial makeup of the township was 97.83% White, 0.29% African American, 0.58% Native American, 0.24% Asian, 0.10% Pacific Islander, 0.10% from other races, and 0.87% from two or more races. Hispanic or Latino of any race were 0.41% of the population.
There were 1,494 households out of which 37.3% had children under the age of 18 living with them, 68.8% were married couples living together, 6.2% had a female householder with no husband present, and 21.2% were non-families. 16.8% of all households were made up of individuals and 5.3% had someone living alone who was 65 years of age or older. The average household size was 2.77 and the average family size was 3.10.
In the township the population was spread out with 27.5% under the age of 18, 7.2% from 18 to 24, 31.0% from 25 to 44, 24.9% from 45 to 64, and 9.4% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 103.1 males. For every 100 females age 18 and over, there were 104.9 males.
The median income for a household in the township was $51,341, and the median income for a family was $55,357. Males had a median income of $39,894 versus $28,095 for females. The per capita income for the township was $18,857. About 4.7% of families and 5.5% of the population were below the poverty line, including 4.9% of those under age 18 and 6.5% of those age 65 or over.