Mannsville is a town in Johnston County, Oklahoma, United States. The population was 728 as of the 2020 Census. The locale is old enough to appear on a 1911 Rand McNally map of the county.
Geography
Mannsville is located in southwestern Johnston County. It is bordered to the west by the town of Dickson in Carter County. As of 2010, the town had a total area of , more than triple its area in 2000. , or 0.73% of the town's area, are water bodies.
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2020 census
As of the 2020 census, Mannsville had a population of 728. The median age was 38.4 years. 27.2% of residents were under the age of 18 and 18.7% of residents were 65 years of age or older. For every 100 females there were 102.8 males, and for every 100 females age 18 and over there were 100.8 males age 18 and over.
There were 262 households in Mannsville, of which 39.7% had children under the age of 18 living in them. Of all households, 46.9% were married-couple households, 22.1% were households with a male householder and no spouse or partner present, and 22.5% were households with a female householder and no spouse or partner present. About 23.7% of all households were made up of individuals and 10.3% had someone living alone who was 65 years of age or older.
! Race !! Number !! Percent
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| White || 522 || 71.7%
|-
| Black or African American || 2 || 0.3%
|-
| American Indian and Alaska Native || 65 || 8.9%
|-
| Asian || 0 || 0.0%
|-
| Native Hawaiian and Other Pacific Islander || 0 || 0.0%
|-
| Some other race || 66 || 9.1%
|-
| Two or more races || 73 || 10.0%
|-
| Hispanic or Latino (of any race) || 57 || 7.8%
|}
2000 census
As of the census