Hyde County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 1,262, making it the second-least populous county in South Dakota. Its county seat is Highmore. The county was founded in 1873, as a county of the Dakota Territory, and organized in 1883. It was named for James Hyde, a member of legislature in the 1870s.
History
Hyde County was created by the territorial legislature on January 8, 1873, with area partitioned from Buffalo County. It was not organized by that action. Its boundaries were altered by changes in October 1879 and February 1883. On November 5, 1883, the county organization was filled and the county was placed in independent operation.
Geography
The county terrain consists of semi-arid rolling hills, partly devoted to agriculture. The Missouri River flows southeastward at its SW corner, and delineates a portion of the county's south boundary line.
The terrain slopes toward the county's SW corner. Its highest point is on the lower part of its eastern boundary line, at ASL.
Hyde County has a total area of , of which is land and (0.6%) is water.
Major highways
- 20px U.S. Highway 14
- 20px South Dakota Highway 26
- 20px South Dakota Highway 34
- 20px South Dakota Highway 47
Adjacent counties
- Faulk County – north
- Hand County – east
- Buffalo County – south
- Lyman County – southwest
- Hughes County – southwest
- Sully County – west
- Potter County – northwest
Protected areas
- Chapelle State Game Production Area
- Highmore State Game Production Area
- Rezac Lake State Game Production Area
- Rice Lake State Game Production Area
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|footnote=U.S. Decennial Census<br>1790–1960 1900–1990<br>1990–2000 2010–2020 The population density was .
Of the residents, 21.7% were under the age of 18 and 25.8% were 65 years of age or older; the median age was 45.5 years. For every 100 females there were 103.5 males, and for every 100 females age 18 and over there were 102.5 males.
The racial makeup of the county was 86.5% White, 0.3% Black or African American, 8.2% American Indian and Alaska Native, 0.4% Asian, 0.6% from some other race, and 4.0% from two or more races. Hispanic or Latino residents of any race comprised 1.9% of the population.
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See also
- National Register of Historic Places listings in Hyde County, South Dakota