Rockwell City is a city in Calhoun County, Iowa, United States. The population was 2,240 in 2020. It is the county seat of Calhoun County. History Rockwell City was platted in 1876. It is named for its founders, John M. Rockwell, and his wife Charlotte M. Rockwell. Demographics 2010 census As of the census of 2010, there were 1,709 people, 773 households, and 471 families residing in the city. The population density was . There were 916 housing units at an average density of . The racial makeup of the city was 98.4% White, 0.2% African American, 0.1% Native American, 0.4% Asian, 0.1% from other races, and 0.8% from two or more races. Hispanic or Latino of any race were 0.4% of the population. There were 773 households, of which 24.7% had children under the age of 18 living with them, 49.3% were married couples living together, 8.7% had a female householder with no husband present, 3.0% had a male householder with no wife present, and 39.1% were non-families. 36.2% of all households were made up of individuals, and 20% had someone living alone who was 65 years of age or older. The average household size was 2.14 and the average family size was 2.77. The median age in the city was 47.6 years. 21.8% of residents were under the age of 18; 5.9% were between the ages of 18 and 24; 19.5% were from 25 to 44; 27.5% were from 45 to 64; and 25.4% were 65 years of age or older. The gender makeup of the city was 46.6% male and 53.4% female. 2000 census As of the census of 2000, there were 2,264 people, 818 households, and 503 families residing in the city. The population density was . There were 951 housing units at an average density of . The racial makeup of the city was 93.99% White, 3.09% African American, 0.53% Native American, 0.31% Asian, 0.04% Pacific Islander, 0.80% from other races, and 1.24% from two or more races. Hispanic or Latino of any race were 1.68% of the population. There were 818 households, out of which 25.3% had children under the age of 18 living with them, 52.0% were married couples living together, 7.5% had a female householder with no husband present, and 38.5% were non-families. 36.2% of all households were made up of individuals, and 23.6% had someone living alone who was 65 years