South Dakota Non-Hispanic American Indian and Alaska Native Alone Citizen Voting-age Population By County in 2021 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the Non-Hispanic American Indian & Alaska Native Alone citizen voting-age population for South Dakota was 14,695 and represented 2.28% of the total South Dakota citizen voting-age population.

Among all South Dakota counties, Oglala Lakota had the highest Non-Hispanic American Indian & Alaska Native Alone citizen voting-age population (7.91K), followed by Pennington (5.20K), and Todd (4.71K).

In terms of percentages, Oglala Lakota had the highest percentage of its citizen voting-age population being Non-Hispanic American Indian & Alaska Native Alone (90.81%), followed by Todd (86.90%), and Buffalo (77.87%).

The chart and table below shows the Non-Hispanic American Indian & Alaska Native Alone citizen voting-age population of each county and the percentage of each county's citizen voting-age population that were Non-Hispanic American Indian & Alaska Native Alone.

You can see similar information for other states and by state for the United States.

You can also see similar information for other ethnicities.

See this for other years:
South Dakota Non-Hispanic American Indian and Alaska Native Alone Citizen Voting-age Population By County in 2021
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County Citizen Voting-age Population % of County Citizen Voting-age Population
Oglala Lakota 7905 90.81
Pennington 5200 6.32
Todd 4710 86.90
Minnehaha 2525 1.82
Dewey 2385 71.95
Roberts 2230 30.34
Charles Mix 1690 26.08
Corson 1605 64.72
Hughes 1265 9.46
Ziebach 1180 66.48
Jackson 1060 53.40
Bennett 1020 51.00
Buffalo 950 77.87
Lyman 935 35.76
Brown 775 2.77
Mellette 745 55.39
Yankton 540 3.02
Fall River 530 9.32
Tripp 520 12.31
Moody 495 10.73
Meade 475 2.11
Lawrence 415 1.99
Walworth 415 10.12
Bon Homme 405 7.21
Codington 405 1.92
Brule 360 9.44
Day 320 7.59
Davison 300 2.00
Clay 270 2.31
Lake 215 2.40
Marshall 205 6.40
Brookings 190 0.73
Custer 185 2.66
Beadle 150 1.19
Gregory 150 4.94
Butte 120 1.56
Union 95 0.78
Lincoln 90 0.20
Jones 80 11.77
Potter 75 3.74
Perkins 55 2.39
Harding 45 4.87
Stanley 40 1.74
Edmunds 35 1.17
Haakon 35 2.53
Hutchinson 30 0.55
Jerauld 30 2.15
Turner 30 0.47
Aurora 20 1.09
Douglas 20 0.96
Spink 20 0.41
Grant 15 0.27
Hyde 15 1.39
Kingsbury 15 0.39
McCook 15 0.37
Miner 15 0.85
Sully 15 1.46
Faulk 10 0.63
McPherson 10 0.56
Sanborn 10 0.58
Campbell 4 0.35
Clark 4 0.15
Deuel 4 0.13
Hamlin 4 0.10
Hand 4 0.17
Hanson 0 0.00