Grimes is a city in Polk and Dallas counties in the U.S. state of Iowa. The population was 15,392 at the time of the 2020 Census. Grimes is part of the Des Moines metropolitan area. History Grimes incorporated as a city on May 7, 1894. It is named after James W. Grimes, a former U.S. senator and the third governor of Iowa. Geography Grimes is located at (41.682939, -93.784438). According to the United States Census Bureau, the city has a total area of , of which is land and is water. Climate Demographics 2010 census As of the census of 2010, there were 8,246 people, 3,115 households, and 2,222 families living in the city. The population density was . There were 3,272 housing units at an average density of . The racial makeup of the city was 95.0% White, 1.1% African American, 0.2% Native American, 1.7% Asian, 0.8% from other races, and 1.3% from two or more races. Hispanic or Latino of any race were 2.5% of the population. There were 3,115 households, of which 44.1% had children under the age of 18 living with them, 58.7% were married couples living together, 9.2% had a female householder with no husband present, 3.4% had a male householder with no wife present, and 28.7% were non-families. 21.7% of all households were made up of individuals, and 4.5% had someone living alone who was 65 years of age or older. The average household size was 2.65 and the average family size was 3.15. The median age in the city was 31.1 years. 31.2% of residents were under the age of 18; 6% were between the ages of 18 and 24; 36.7% were from 25 to 44; 20.4% were from 45 to 64; and 5.7% were 65 years of age or older. The gender makeup of the city was 49.3% male and 50.7% female. 2000 census As of the census of 2000, there were 5,098 people, 1,887 households, and 1,437 families living in the city. The population density was . There were 1,958 housing units at an average density of . The racial makeup of the city was 97.19% White, 0.33% African American, 0.22% Native American, 0.88% Asian, 0.27% from other races, and 1.10% from two or more races. Hispanic or Latino of any race were 1.08% of the population. 2005 population estimate was 6,175 (Des Moines Register, July 12, 2006). There were 1,887