Lyman County is a county located in the U.S. state of South Dakota. As of the 2020 census, the population was 3,718. Its county seat is Kennebec.
Lyman County was created by the Dakota Territorial Legislature on January 8, 1873, but was not organized until May 21, 1893. Its boundaries were altered in 1891, 1897, 1898, and 1916. The county was named for W. P. Lyman, a politician.
| Name: | Lyman County |
|---|---|
| FIPS code: | 46-085 |
| State: | South Dakota |
| Founded: | 1893 |
| Named for: | W. P. Lyman |
| Seat: | Kennebec |
| Total Area: | 1,707 sq mi (4,420 km²) |
| Land Area: | 1,642 sq mi (4,250 km²) |
| Total Population: | 3,718 |
| Population Density: | 2.2/sq mi (0.84/km²) |
| Time zone: | UTC−6 (Central) |
| Summer Time Zone (DST): | UTC−5 (CDT) |
| Website: | www.lymancounty.org |
Lyman County location map. Where is Lyman County?
History
Lyman County was created in 1873 and organized in 1893. Oacoma served as its first county seat in 1891; in 1922 the seat was transferred to Kennebec.
Lyman County Road Map
Geography
Lyman County is bordered on the north and east by the Missouri River, which flows southerly along its edge, and the western portion of its south line is also delineated by the White River, which then continued flowing eastward through the county’s eastern area to discharge into the Missouri. Its upper central portion is drained by the Bad Horse Creek, which discharges into the Missouri near the midpoint of the county’s north boundary.
The county terrain consists of rolling hills, sloping to the river drainages. Its area is largely devoted to agriculture. The county has a total area of 1,707 square miles (4,420 km), of which 1,642 square miles (4,250 km) is land and 65 square miles (170 km) (3.8%) is water.
Major highways
- Interstate 90
- U.S. Highway 83
- U.S. Highway 183
- South Dakota Highway 47
- South Dakota Highway 49
- South Dakota Highway 53
- South Dakota Highway 273
- South Dakota Highway 1806
Adjacent counties
- Hughes County – north
- Hyde County – northeast
- Buffalo County – northeast
- Brule County – east
- Charles Mix County – southeast
- Gregory County – south
- Tripp County – south
- Mellette County – southwest
- Jones County – west
- Stanley County – northwest
Protected areas
- Brakke State Game Production Area
- Brye Bottom State Game Production Area
- Bull Creek State Game Production Area
- Carpenter State Game Production Area
- Cedar Creek Recreation Area
- Counselor Creek Recreation Area
- Dude Ranch State Lakeside Use Area
- Fate Dam State Game Production Aea
- Fort Pierre National Grassland (part)
- Good Soldier Creek Recreation Area
- Iona State Game Production Area
- Iron Nation Recreation Area
- Lindely State Game Production Area
- Lower Brule Recreation Area
- Narrows Recreation Area
- Neugebauer State Game Production Area
- Reis Bottom State Game Production Area
- Salzmann State Game Production Area
Lakes
- Lake Francis Case (part)
- Lake Sharpe (part)
Lyman County Topographic Map
Lyman County Satellite Map
Lyman County Outline Map
