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Mount Vernon is a city in Davison County, South Dakota, United States. The population was 461 at the 2020 census. It is part of the Mitchell, South Dakota Micropolitan Statistical Area.
The town takes its name from Mount Vernon, the estate of George Washington; an early variant name was Arlandtown.
Geography
According to the United States Census Bureau, the city has a total area of , all land.
Demographics
2020 census
As of the 2020 census, Mount Vernon had a population of 461. The median age was 37.8 years. 25.4% of residents were under the age of 18 and 13.7% of residents were 65 years of age or older. For every 100 females there were 96.2 males, and for every 100 females age 18 and over there were 96.6 males age 18 and over.
There were 196 households in Mount Vernon, of which 34.7% had children under the age of 18 living in them. Of all households, 54.1% were married-couple households, 18.4% were households with a male householder and no spouse or partner present, and 20.4% were households with a female householder and no spouse or partner present. About 28.0% of all households were made up of individuals and 8.1% had someone living alone who was 65 years of age or older.
! Race !! Number !! Percent
|-
| White || 423 || 91.8%
|-
| Black or African American || 0 || 0.0%
|-
| American Indian and Alaska Native || 11 || 2.4%
|-
| Asian || 0 || 0.0%
|-
| Native Hawaiian and Other Pacific Islander || 0 || 0.0%
|-
| Some other race || 2 || 0.4%
|-
| Two or more races || 25 || 5.4%
|-
| Hispanic or Latino (of any race) || 8 || 1.7%
|}
2010 census
As of the census of 2010, there were 462 people, 178 households, and 125 families residing in the city. The population density was . There were 205 housing units at an average density of . The racial makeup of the city was 92.6% White, 5.4% Native American, 0.4% Pacific Islander, and 1.5% from two or more races. Hispanic or Latino of any race were 2.2% of the population.
There were 178 households, of which 39.9% had children under the age of 18 living with them, 59.0% were married couples living together, 6.2% had a female householder with no husband present, 5.1% had a male householder with no wife present, and 29.8% were non-families. 25.8% of all households were made up of individuals, and 10.1% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.15.
The median age in the city was 37.4 years. 30.1% of residents were under the age of 18; 6.8% were between the ages of 18 and 24; 23.8% were from 25 to 44; 26.4% were from 45 to 64; and 12.8% were 65 years of age or older. The gender makeup of the city was 53.0% male and 47.0% female.
2000 census
As of the census