Lake County, South Dakota

Lake County, South Dakota
Lake County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 11,059. Its county seat is Madison. The county was formed in 1873.
Geography
The terrain of Lake County consists of rolling hills, with the area devoted to agriculture. A tributary of the East Fork Vermillion River flows south-southeastward through the lower western part of the county, and Buffalo Creek flows southeastward from the central part of the county, leaving the county near its southeast corner. The terrain generally slopes to the south, although high points (ca. 1,814' ASL) are found on the north and south boundary lines and points between.
Lake County has a total area of , of which is land and (2.1%) is water.
Lakes
Buffalo Slough
Brant Lake
Davis Slough
Gilman Lake
Green Lake
Lake Badus
Lake Herman
Lake Madison
Long Lake
Mud Lake
Pelican Lake
Round Lake
Spring Lake
Protected areas
Lake Herman State Park
Walker's Point State Recreation Area
Major highways
U.S. Highway 81
South Dakota Highway 19
South Dakota Highway 34
Adjacent counties
Brookings County - northeast
Moody County - east
Minnehaha County - southeast
McCook County - southwest
Miner County - west
Kingsbury County - northwest
Demographics
2020 census
As of the census of 2020, there were 11,059 people.
2010 census
As of the census of 2010, there were 11,200 people, 4,483 households, and 2,814 families in the county. The population density was . There were 5,559 housing units at an average density of . The racial makeup of the county was 96.2% white, 0.7% Asian, 0.7% American Indian, 0.5% black or African American, 0.8% from other races, and 1.1% from two or more races. Those of Hispanic or Latino origin made up 1.6% of the population. In terms of ancestry, 50.7% were German, 20.6% were Norwegian, 12.4% were Irish, 6.6% were English, 6.2% were Dutch, 5.0% were Danish, and 5.0% were American.
Of the 4,483 households, 26.7% had children under the age of 18 living with them, 53.0% were married couples living together, 6.8% had a female householder with no husband present, 37.2% were non-families, and 30.9% of all households were made up of individuals. The average household size was 2.30 and the average family size was 2.88. The median age was 39.9 years.
The median income for a household in the county was $45,606 and the median income for a family was $57,753. Males had a median income of $36,370 versus $25,898 for females. The per capita income for the county was $22,447. About 6.5% of families and 12.1% of the population were below the poverty line, including 12.8% of those under age 18 and 8.8% of those age 65 or over.
Communities
City
Madison (county seat)
Towns
Brant Lake
Nunda
Ramona
Village
Wentworth
Census-designated places
Brant Lake South
Chester
Graceville Colony
Lake Madison
Rustic Acres Colony
Winfred
Other unincorporated communities
Franklin
Junius
Rutland
Townships
Badus
Chester
Clarno
Concord
Farmington
Franklin
Herman
Lake View
Le Roy
Nunda
Orland
Rutland
Summit
Wayne
Wentworth
Winfred
Historical townsite
Saranac
Politics
Lake County voters have voted for Republican Party candidates in 62 percent of national elections since 1964.
See also
National Register of Historic Places listings in Lake County, South Dakota
References
External links
Lake County official website
1873 establishments in Dakota Territory
Populated places established in 1873