at (38.956350, -85.890068). According to the 2010 census, Seymour has a total area of , of which (or 99.96%) is land and (or 0.04%) is water. Topography The topology is dominated by the East Fork of the White River, a slow moving, heavily-silted and meandering floodplain. Because of the surrounding low lying swamplands and agricultural activity, the river is prone to frequent flooding averaging 19 days above flood stage per year; with at least three major floods recorded since 1900. Demographics 2020 census As of the census of 2020, there were 21,569 people and 7,866 households in the city. The population density was . The racial makeup of the city was 82.2% White, 2.0% African American, 0.2% Native American, 4.3% Asian, 0.1% Pacific Islander, and 2.3% from two or more races. Hispanic or Latino of any race were 13.0% of the population. 2010 census As of the census of 2010, there were 17,503 people, 6,907 households, and 4,514 families living in the city. The population density was . There were 7,719 housing units at an average density of . The racial makeup of the city was 90.3% White, 1.3% African American, 0.2% Native American, 1.2% Asian, 0.1% Pacific Islander, 5.1% from other races, and 1.8% from two or more races. Hispanic or Latino of any race were 11.5% of the population. There were 6,907 households, of which 34.4% had children under the age of 18 living with them, 45.3% were married couples living together, 13.5% had a female householder with no husband present, 6.5% had a male householder with no wife present, and 34.6% were non-families. 28.1% of all households were made up of individuals, and 9.8% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 3.01. The median age in the city was 35.5 years. 25.3% of residents were under the age of 18; 8.7% were between the ages of 18 and 24; 28.6% were from 25 to 44; 24% were from 45 to 64; and 13.4% were 65 years of age or older. The gender makeup of the city was 48.7% male and 51.3% female. 2000 census As of the census of 2000, there were 18,101 people, 7,231 households, and 4,743 families living in the city. The population density was . There were 7,709 housing units at an average density of . The