Mitchellville is a city in Polk County and is partly in Jasper County in the U.S. state of Iowa. The population was 2,254 at the 2010 census.The Polk County portion of Mitchellville is part of the Des Moines - West Des Moines Metropolitan Statistical Area, while the much smaller Jasper County portion is part of the Newton Micropolitan Statistical Area.The Iowa Correctional Institution for Women is located in Mitchellville.HistoryMitchellville was founded by Thomas Mitchell in 1856 and it incorporated as a city on September 30, 1875. Mitchell's farm was later purchased by Polk County, becoming Thomas Mitchell Park. Mitchell was the first white settler in Polk County, Iowa.GeographyMitchellville is located at .According to the United States Census Bureau, the city has a total area of 2.34sqmi, of which, 2.33sqmi is land and 0.01sqmi is water.Demographics2010 censusAs of the census of 2010, there were 2,254 people, 651 households, and 430 families residing in the city. The population density was 967.4PD/sqmi. There were 693 housing units at an average density of 297.4/sqmi. The racial makeup of the city was 91.7% White, 5.8% African American, 0.8% Native American, 0.5% Asian, 0.2% from other races, and 1.0% from two or more races. Hispanic or Latino of any race were 2.4% of the population.