South Dakota Non-Hispanic American Indian and Alaska Native Alone Citizen 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 population for South Dakota was 23,235 and represented 2.75% of the total South Dakota citizen population.

Among all South Dakota counties, Oglala Lakota had the highest Non-Hispanic American Indian & Alaska Native Alone citizen population (12.84K), followed by Pennington (8.70K), and Todd (8.22K).

In terms of percentages, Oglala Lakota had the highest percentage of its citizen population being Non-Hispanic American Indian & Alaska Native Alone (89.70%), followed by Todd (82.32%), and Buffalo (82.24%).

The chart and table below shows the Non-Hispanic American Indian & Alaska Native Alone citizen population of each county and the percentage of each county's citizen 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 Population By County in 2018
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County Citizen Population % of County Citizen Population
Oglala Lakota 12840 89.70
Pennington 8695 8.06
Todd 8220 82.32
Dewey 4495 77.90
Minnehaha 4250 2.38
Roberts 3705 36.32
Corson 2845 68.31
Charles Mix 2750 29.44
Ziebach 2105 75.18
Hughes 1940 11.11
Jackson 1825 55.64
Bennett 1780 51.97
Buffalo 1690 82.24
Lyman 1535 39.66
Brown 1210 3.19
Mellette 1105 53.77
Meade 790 2.90
Moody 790 12.31
Tripp 680 12.52
Yankton 670 2.97
Day 570 10.38
Brule 560 10.73
Lawrence 560 2.26
Clay 550 4.04
Walworth 540 10.07
Codington 525 1.89
Davison 425 2.15
Bon Homme 390 5.64
Fall River 385 5.73
Brookings 350 1.08
Marshall 340 7.25
Lincoln 310 0.57
Gregory 290 6.91
Stanley 290 9.68
Custer 285 3.37
Beadle 260 1.57
Butte 235 2.32
Grant 200 2.84
Hyde 150 11.32
Spink 110 1.69
Union 105 0.70
Hutchinson 90 1.24
McPherson 80 3.38
Aurora 75 2.83
Lake 75 0.60
Clark 70 1.91
Faulk 70 3.02
Douglas 65 2.25
Haakon 60 2.89
Perkins 55 1.90
Turner 45 0.55
Potter 40 1.74
Harding 35 2.72
Edmunds 30 0.77
Hamlin 25 0.43
McCook 25 0.46
Jerauld 20 1.01
Sanborn 20 0.84
Sully 15 1.13
Jones 10 1.37
Kingsbury 10 0.20
Campbell 4 0.28
Deuel 4 0.09
Hanson 4 0.12
Miner 4 0.18
Hand 0 0.00