Moody County is a county in the U.S. state of South Dakota, United States. The population was 6,336 at the 2020 census. Its county seat is Flandreau. The county is named for Gideon C. Moody.

Geography

Moody County lies on the east side of South Dakota. Its east boundary line abuts the west boundary line of the state of Minnesota. The Big Sioux River flows southerly through the center of the county. Its terrain consists of rolling hills, devoted to agriculture, with lakes in the western portion. The terrain slopes to the south, with its high point near its northeast corner, at ASL, although the east and west sides also slope into the river valley through the center of the county. The county has a total area of , of which is land and (0.3%) is water.

Major highways

  • 20px Interstate 29
  • 20px South Dakota Highway 11
  • 20px South Dakota Highway 13
  • 20px South Dakota Highway 32
  • 20px South Dakota Highway 34

Adjacent counties

  • Brookings County – north
  • Lincoln County, Minnesota – northeast
  • Pipestone County, Minnesota – east
  • Rock County, Minnesota – southeast
  • Minnehaha County – south
  • Lake County – west

Lakes

  • Anderson Slough
  • Lake Campbell (part)
  • Mud Lake
  • Poison Lake
  • Bull Slough

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2020 census

As of the 2020 census, there were 6,336 people, 2,474 households, and 1,685 families residing in the county. The population density was .

There were 2,474 households in the county, of which 31.5% had children under the age of 18 living with them and 21.3% had a female householder with no spouse or partner present. About 26.9% of all households were made up of individuals and 13.0% had someone living alone who was 65 years of age or older.

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Education

School districts include:

  • Brookings School District 05-1
  • Chester School District 39-1
  • Colman-Egan School District 50-5
  • Dell Rapids School District 49-3
  • Elkton School District 05-3
  • Flandreau School District 50-3
  • Oldham-Ramona-Rutland School District 39-6
  • Sioux Valley School District 05-5

The Rutland School District 39-4, in the county,