Fort Totten is a census-designated place (CDP) in Benson County, North Dakota, United States. The population was 1,243 at the 2010 census. Fort Totten is located within the Spirit Lake Reservation and is the site of tribal headquarters. The reservation has a total population estimated at 6,000. Although not formally incorporated as a city, Fort Totten has the largest population of any community in Benson County.

According to the United States Census Bureau, the CDP has a total Place of 8.8 square miles (23 km), of which 8.6 square miles (22 km²) is estate and 0.2 square miles (0.52 km) (2.77%) is water.

As of the census of 2000, there were 952 people, 230 households, and 200 families residing in the CDP. The population density was 124.2 people per square mile (47.9/km²). There were 255 housing units at an average density of 33.3/sq mi (12.8/km). The racial makeup of the CDP was 0.84% White, 0.11% African American, 98.84% Native American, and 0.21% from two or more races. Hispanic or Latino of any race were 0.74% of the population.

There were 230 households, out of which 54.8% had kids under the age of 18 living similar to them, 28.7% were married couples blooming together, 43.9% had a female householder gone no husband present, and 13.0% were non-families. 10.4% of anything households were made happening of individuals, and 3.9% had someone energetic alone who was 65 years of age or older. The average household size was 4.14 and the average family size was 4.23.