Tripp County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 5,624. Its county seat is Winner. The county was created in 1873, and was organized in 1909. It is named for lawyer, judge, and diplomat Bartlett Tripp.
On May 8th, 1965, the county was struck by the only recorded F5 tornado in South Dakota history. The tornado was a mile wide and injured 1 person while tracking through the eastern portion of the county.
Geography
Tripp County lies on the south line of South Dakota. Its south boundary is the Nebraska state line, while its north boundary is the meandering White River. The Keya Paha River flows east-southeasterly through the lower part of the county. The county terrain is composed of rolling hills carved by gullies and drainages. The county terrain generally slopes to the south and east, although its upper portion drops northward into the White River valley. The county's highest point is on the lower part of its west boundary line, at ASL. The county has a total area of , of which is land and (0.3%) is water.
Major highways
- 20px U.S. Highway 18
- 23px U.S. Highway 183
- 20px South Dakota Highway 44
- 20px South Dakota Highway 49
- 20px South Dakota Highway 53
Adjacent counties
- Lyman County – north
- Gregory County – east
- Keya Paha County, Nebraska – south
- Cherry County, Nebraska – southwest
- Todd County – west
- Mellette County – northwest
Protected areas
Source:
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|footnote=U.S. Decennial Census<br>1790–1960 1900–1990<br>1990–2000 2010–2020
The population density was . There were 2,762 housing units, of which 19.2% were vacant. Among occupied housing units, 71.2% were owner-occupied and 28.8% were renter-occupied. The homeowner vacancy rate was 1.7% and the rental vacancy rate was 13.0%.
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See also
- National Register of Historic Places listings in Tripp County, South Dakota