South Dakota Non-Hispanic American Indian and Alaska Native Alone Citizen Voting-age Population By County in 2018 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2018, the Non-Hispanic American Indian & Alaska Native Alone citizen voting-age population for South Dakota was 18,765 and represented 2.95% 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 (8.05K), followed by Pennington (5.21K), and Todd (4.76K).

In terms of percentages, Oglala Lakota had the highest percentage of its citizen voting-age population being Non-Hispanic American Indian & Alaska Native Alone (89.64%), followed by Buffalo (80.16%), and Todd (78.89%).

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 2018
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County Citizen Voting-age Population % of County Citizen Voting-age Population
Oglala Lakota 8050 89.64
Pennington 5205 6.31
Todd 4765 78.89
Minnehaha 2650 2.00
Dewey 2645 72.07
Roberts 2225 29.97
Corson 1645 61.61
Charles Mix 1620 24.64
Ziebach 1355 71.32
Hughes 1270 9.60
Jackson 1090 48.44
Buffalo 1030 80.16
Bennett 1025 46.49
Lyman 900 32.67
Brown 700 2.44
Mellette 695 49.64
Moody 555 11.58
Meade 495 2.39
Yankton 490 2.76
Tripp 425 10.14
Lawrence 395 1.94
Walworth 375 9.10
Bon Homme 340 6.09
Brule 335 8.62
Day 335 7.80
Fall River 335 6.06
Clay 305 2.71
Codington 290 1.38
Davison 250 1.64
Marshall 215 6.25
Brookings 210 0.81
Gregory 205 6.39
Lincoln 200 0.52
Custer 190 2.67
Beadle 175 1.45
Grant 170 3.13
Butte 150 1.95
Stanley 150 6.70
Hyde 95 9.05
Union 90 0.79
McPherson 80 4.23
Hutchinson 70 1.28
Faulk 65 3.58
Douglas 60 2.67
Spink 60 1.22
Lake 50 0.51
Clark 35 1.29
Turner 35 0.56
Harding 30 3.03
Perkins 30 1.32
Potter 30 1.67
Aurora 25 1.32
Haakon 25 1.57
Hamlin 25 0.63
McCook 25 0.63
Jerauld 20 1.29
Sanborn 20 1.08
Edmunds 15 0.51
Sully 15 1.48
Jones 10 1.59
Campbell 4 0.35
Deuel 4 0.12
Hanson 4 0.17
Kingsbury 4 0.10
Miner 4 0.24
Hand 0 0.00