Dewey County, South Dakota

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FOREST_CITY_BRIDGE,_DEWEY_COUNTY,_SD

Dewey County
U.S. county
Location within the U.S. state of South Dakota
South Dakota's location within the U.S.
Coordinates:
Country	United States
State	South Dakota
Founded	1883
Seat	Timber Lake
Area
• Total	2,445 sq mi (6,330 km2)
• Land	2,302 sq mi (5,960 km2)
• Water	143 sq mi (370 km2)
Population  (2020)
• Total	5,301
• Density	2.3/sq mi (0.9/km2)

Dewey County is a county located in the state of South Dakota. As of the 2020 census, the population was 5,301. The county seat is Timber Lake. The county was created in 1883 and named for William P. Dewey, a territorial surveyor-general.

Geography

According to the United States Census Bureau, the county has a total area of 2,445 square miles (6,330 km²), of which 2,302 square miles (5,960 km²) is land and 143 square miles (370 km²) (5.9%) is water.

Adjacent counties

• Corson County (north)
• Ziebach County (east)
• Haakon County (southeast)
• Stanley County (south)
• Sully County (south)
• Potter County (southwest)
• Walworth County (west)

Major highways

• U.S. Route 12
• South Dakota Highway 20
• South Dakota Highway 63

Demographics

As of the 2020 census, there were 5,301 people, 1,678 households, and 1,278 families residing in the county. The population density was 2.3 inhabitants per square mile (0.89/km²). There were 2,000 housing units at an average density of 0.87 per square mile (0.34/km²).

Communities

City

• Timber Lake

Towns

• Eagle Butte (partly in Ziebach County)

Unincorporated communities

• Glencross
• Isabel
• La Plant
• Promise
• Ridgeview
• Whitehorse

Politics

Dewey County is known for its political leanings, often voting for the Democratic Party in national elections. The county's political landscape is influenced by its significant Native American population, particularly members of the Cheyenne River Sioux Tribe.

See also

• List of counties in South Dakota
• National Register of Historic Places listings in Dewey County, South Dakota