South Dakota Population By County in 2018
Updated on June 22, 2021.

According to the US Census Bureau population estimates, there were 878,698 people living in South Dakota in 2018. Minnehaha County was the most populated county with 190,992 residents, followed by Pennington County with 111,950 residents, and Lincoln County with 58,795 residents. Jones County with a population of 928 was the least populated county in South Dakota in 2018.

Use the map below to interactively explore the population of each county in South Dakota in 2018. The data can also be explored further by sorting and filtering with the table below.

Hover/Click on the counties to see the values.
South Dakota Population By County (2018)
See also Population estimate for other years:
Table of South Dakota Population By County in 2018
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County Population % of State Population
Aurora 2,785 0.32%
Beadle 18,423 2.10%
Bennett 3,473 0.40%
Bon Homme 6,910 0.79%
Brookings 35,077 3.99%
Brown 39,145 4.46%
Brule 5,230 0.60%
Buffalo 2,027 0.23%
Butte 10,253 1.17%
Campbell 1,366 0.16%
Charles Mix 9,331 1.06%
Clark 3,726 0.42%
Clay 13,983 1.59%
Codington 28,033 3.19%
Corson 4,178 0.48%
Custer 8,812 1.00%
Davison 19,784 2.25%
Day 5,507 0.63%
Deuel 4,352 0.50%
Dewey 5,925 0.67%
Douglas 2,926 0.33%
Edmunds 3,866 0.44%
Fall River 6,740 0.77%
Faulk 2,315 0.26%
Grant 7,103 0.81%
Gregory 4,189 0.48%
Haakon 1,902 0.22%
Hamlin 6,070 0.69%
Hand 3,240 0.37%
Hanson 3,364 0.38%
Harding 1,252 0.14%
Hughes 17,683 2.01%
Hutchinson 7,306 0.83%
Hyde 1,271 0.14%
Jackson 3,278 0.37%
Jerauld 2,026 0.23%
Jones 928 0.11%
Kingsbury 4,926 0.56%
Lake 13,055 1.49%
Lawrence 25,727 2.93%
Lincoln 58,795 6.69%
Lyman 3,804 0.43%
McCook 5,601 0.64%
McPherson 2,401 0.27%
Marshall 4,921 0.56%
Meade 28,204 3.21%
Mellette 2,034 0.23%
Miner 2,204 0.25%
Minnehaha 190,992 21.74%
Moody 6,502 0.74%
Oglala Lakota 14,331 1.63%
Pennington 111,950 12.74%
Perkins 2,908 0.33%
Potter 2,206 0.25%
Roberts 10,376 1.18%
Sanborn 2,396 0.27%
Spink 6,484 0.74%
Stanley 3,017 0.34%
Sully 1,377 0.16%
Todd 10,245 1.17%
Tripp 5,491 0.63%
Turner 8,422 0.96%
Union 15,570 1.77%
Walworth 5,477 0.62%
Yankton 22,759 2.59%
Ziebach 2,744 0.31%