Fort Calhoun is a city in Washington County, Nebraska, United States. The population was 908 at the 2010 census. The city includes Fort Atkinson, the first fort built west of the Missouri River.HistoryFort Calhoun was platted in 1855. It was named for John C. Calhoun.GeographyFort Calhoun is located at .According to the United States Census Bureau, the city has a total area of 0.65sqmi, all of it land.Demographics2010 censusAs of the census of 2010, there were 908 people, 391 households, and 253 families residing in the city. The population density was 1396.9PD/sqmi. There were 413 housing units at an average density of 635.4/sqmi. The racial makeup of the city was 96.7% White, 0.2% African American, 0.2% Native American, 0.1% Asian, 0.1% Pacific Islander, 0.7% from other races, and 2.0% from two or more races. Hispanic or Latino of any race were 3.2% of the population.
