South Dakota Non-Hispanic American Indian and Alaska Native Alone Citizen Voting-age Population By County in 2020 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2020, the Non-Hispanic American Indian & Alaska Native Alone citizen voting-age population for South Dakota was 17,880 and represented 2.77% 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 (8.19K), followed by Pennington (5.16K), and Todd (5.12K).

In terms of percentages, Oglala Lakota had the highest percentage of its citizen voting-age population being Non-Hispanic American Indian & Alaska Native Alone (90.90%), followed by Todd (85.98%), and Buffalo (76.92%).

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 2020
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County Citizen Voting-age Population % of County Citizen Voting-age Population
Oglala Lakota 8190 90.90
Pennington 5160 6.05
Todd 5120 85.98
Dewey 2570 70.80
Minnehaha 2355 1.74
Roberts 2250 30.10
Charles Mix 1630 24.96
Corson 1630 62.69
Ziebach 1325 67.43
Hughes 1280 9.65
Jackson 1140 51.12
Bennett 1025 46.80
Buffalo 950 76.92
Lyman 905 33.21
Mellette 790 53.56
Brown 710 2.48
Yankton 500 2.84
Moody 445 9.26
Fall River 425 7.71
Meade 425 1.97
Walworth 395 9.47
Bon Homme 380 6.84
Lawrence 350 1.69
Tripp 350 8.61
Codington 325 1.56
Beadle 320 2.67
Clay 310 2.75
Custer 305 4.08
Day 290 6.82
Brule 280 7.21
Davison 260 1.73
Marshall 245 6.81
Brookings 215 0.82
Gregory 210 6.58
Lake 155 1.56
Butte 105 1.36
Lincoln 100 0.24
Union 90 0.78
Stanley 75 3.07
Perkins 70 3.02
Douglas 60 2.73
Hyde 60 5.22
Potter 50 2.82
Spink 50 1.03
Jones 45 6.92
Jerauld 40 2.58
Sully 35 3.38
Turner 35 0.56
Edmunds 30 1.05
Hutchinson 30 0.55
Aurora 25 1.31
Harding 25 2.72
Sanborn 25 1.40
Faulk 20 1.10
Haakon 20 1.45
McCook 20 0.51
Grant 15 0.28
Miner 15 0.90
Deuel 10 0.31
McPherson 10 0.55
Campbell 4 0.35
Clark 4 0.15
Hamlin 4 0.10
Hand 4 0.17
Kingsbury 4 0.11
Hanson 0 0.00