Data / Rankings / Population aged 18 to 64 / Counties in South Dakota

Counties in South Dakota by population aged 18 to 64

Clay County had the highest population aged 18 to 64 of 66 counties in 2022, at 69.7%. Jerauld County had the lowest, at 45.1%. The median was 52.8% and the figure for South Dakota was 57.4%. Source: the U.S. Census Bureau.

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Highest69.7Clay County
Lowest45.1Jerauld County
Median52.866 counties
South Dakota57.4History

Map of counties, 2022

Aurora County: 52.4 %Beadle County: 54.2 %Bennett County: 54.3 %Bon Homme County: 59.1 %Brookings County: 64.5 %Brown County: 57.8 %Brule County: 53.9 %Buffalo County: 51.9 %Butte County: 53.7 %Campbell County: 50.9 %Charles Mix County: 52.4 %Clark County: 50.7 %Clay County: 69.7 %Codington County: 57.7 %Corson County: 51.9 %Custer County: 49.6 %Davison County: 56.7 %Day County: 50.4 %Deuel County: 53.2 %Dewey County: 53.8 %Douglas County: 48.4 %Edmunds County: 54 %Fall River County: 50.5 %Faulk County: 50.1 %Grant County: 52.6 %Gregory County: 47.8 %Haakon County: 51.7 %Hamlin County: 49.4 %Hand County: 50.7 %Hanson County: 54.4 %Harding County: 54.2 %Hughes County: 56.7 %Hutchinson County: 50.6 %Hyde County: 52.1 %Jackson County: 50.5 %Jerauld County: 45.1 %Jones County: 50.3 %Kingsbury County: 51.3 %Lake County: 57.4 %Lawrence County: 57.4 %Lincoln County: 58.6 %Lyman County: 54.7 %McCook County: 52.8 %McPherson County: 50.2 %Marshall County: 50.9 %Meade County: 59.8 %Mellette County: 50.6 %Miner County: 51.7 %Minnehaha County: 60.2 %Moody County: 52.9 %Oglala Lakota County: 55.6 %Pennington County: 58.5 %Perkins County: 51.4 %Potter County: 49.2 %Roberts County: 50.1 %Sanborn County: 52.9 %Spink County: 53.2 %Stanley County: 54.2 %Sully County: 56.2 %Todd County: 51.2 %Tripp County: 53.3 %Turner County: 52.8 %Union County: 56.1 %Walworth County: 52.4 %Yankton County: 57.1 %Ziebach County: 57.1 %
  • Under 50
  • 50 to 52
  • 52 to 53
  • 53 to 54
  • 54 to 57
  • 57 and over
%, 2022. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2022

Clay County: 69.7 %Clay County69.7Brookings County: 64.5 %Brookings County64.5Minnehaha County: 60.2 %Minnehaha County60.2Meade County: 59.8 %Meade County59.8Bon Homme County: 59.1 %Bon Homme County59.1Lincoln County: 58.6 %Lincoln County58.6Pennington County: 58.5 %Pennington County58.5Brown County: 57.8 %Brown County57.8Codington County: 57.7 %Codington County57.7Lawrence County: 57.4 %Lawrence County57.4Lake County: 57.4 %Lake County57.4Ziebach County: 57.1 %Ziebach County57.1Yankton County: 57.1 %Yankton County57.1Hughes County: 56.7 %Hughes County56.7Davison County: 56.7 %Davison County56.7Sully County: 56.2 %Sully County56.2Union County: 56.1 %Union County56.1Oglala Lakota County: 55.6 %Oglala Lakota County55.6Lyman County: 54.7 %Lyman County54.7Hanson County: 54.4 %Hanson County54.4Bennett County: 54.3 %Bennett County54.3Beadle County: 54.2 %Beadle County54.2Harding County: 54.2 %Harding County54.2Stanley County: 54.2 %Stanley County54.2Edmunds County: 54 %Edmunds County54Brule County: 53.9 %Brule County53.9Dewey County: 53.8 %Dewey County53.8Butte County: 53.7 %Butte County53.7Tripp County: 53.3 %Tripp County53.3Spink County: 53.2 %Spink County53.2Deuel County: 53.2 %Deuel County53.2Sanborn County: 52.9 %Sanborn County52.9Moody County: 52.9 %Moody County52.9Turner County: 52.8 %Turner County52.8McCook County: 52.8 %McCook County52.8Grant County: 52.6 %Grant County52.6Charles Mix County: 52.4 %Charles Mix County52.4Walworth County: 52.4 %Walworth County52.4Aurora County: 52.4 %Aurora County52.4Hyde County: 52.1 %Hyde County52.1Clay County: 69.7 %Clay County69.7Brookings County: 64.5 %Brookings County64.5Minnehaha County: 60.2 %Minnehaha County60.2Meade County: 59.8 %Meade County59.8Bon Homme County: 59.1 %Bon Homme County59.1Lincoln County: 58.6 %Lincoln County58.6Pennington County: 58.5 %Pennington County58.5Brown County: 57.8 %Brown County57.8Codington County: 57.7 %Codington County57.7Lawrence County: 57.4 %Lawrence County57.4Lake County: 57.4 %Lake County57.4Ziebach County: 57.1 %Ziebach County57.1Yankton County: 57.1 %Yankton County57.1Hughes County: 56.7 %Hughes County56.7Davison County: 56.7 %Davison County56.7Sully County: 56.2 %Sully County56.2Union County: 56.1 %Union County56.1Oglala Lakota County: 55.6 %Oglala Lakota County55.6Lyman County: 54.7 %Lyman County54.7Hanson County: 54.4 %Hanson County54.4Bennett County: 54.3 %Bennett County54.3Beadle County: 54.2 %Beadle County54.2Harding County: 54.2 %Harding County54.2Stanley County: 54.2 %Stanley County54.2Edmunds County: 54 %Edmunds County54Brule County: 53.9 %Brule County53.9Dewey County: 53.8 %Dewey County53.8Butte County: 53.7 %Butte County53.7Tripp County: 53.3 %Tripp County53.3Spink County: 53.2 %Spink County53.2Deuel County: 53.2 %Deuel County53.2Sanborn County: 52.9 %Sanborn County52.9Moody County: 52.9 %Moody County52.9Turner County: 52.8 %Turner County52.8McCook County: 52.8 %McCook County52.8Grant County: 52.6 %Grant County52.6Charles Mix County: 52.4 %Charles Mix County52.4Walworth County: 52.4 %Walworth County52.4Aurora County: 52.4 %Aurora County52.4Hyde County: 52.1 %Hyde County52.1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Clay County69.7+0.3 pts
2Brookings County64.5-0.2 pts
3Minnehaha County60.2-0 pts
4Meade County59.8+0.1 pts
5Bon Homme County59.1-0.7 pts
6Lincoln County58.6-0.2 pts
7Pennington County58.5-0 pts
8Brown County57.8-0.2 pts
9Codington County57.7-0 pts
10Lawrence County57.4+0.1 pts
11Lake County57.4-0.6 pts
12Ziebach County57.1-0.1 pts
13Yankton County57.1-0.6 pts
14Hughes County56.7-0.8 pts
15Davison County56.70 pts
16Sully County56.2+0.2 pts
17Union County56.1-0.2 pts
18Oglala Lakota County55.6+0.4 pts
19Lyman County54.7-0.2 pts
20Hanson County54.4+0.3 pts
21Bennett County54.3+0.1 pts
22Beadle County54.2-0.1 pts
23Harding County54.2-0.7 pts
24Stanley County54.2+0.4 pts
25Edmunds County54-0.1 pts
26Brule County53.9-0.6 pts
27Dewey County53.8+0.1 pts
28Butte County53.7-0.1 pts
29Tripp County53.3-0.4 pts
30Spink County53.2-0.6 pts
31Deuel County53.2-0.5 pts
32Sanborn County52.9-0.9 pts
33Moody County52.9-0.2 pts
34Turner County52.8-0.3 pts
35McCook County52.8-0.7 pts
36Grant County52.6-0.9 pts
37Charles Mix County52.4-0.4 pts
38Walworth County52.4-0.3 pts
39Aurora County52.4-0.1 pts
40Hyde County52.1+0.5 pts
41Buffalo County51.9-0.1 pts
42Corson County51.9-0.2 pts
43Miner County51.7-0.1 pts
44Haakon County51.7-1.2 pts
45Perkins County51.4-0.5 pts
46Kingsbury County51.3-0.3 pts
47Todd County51.2+0.2 pts
48Marshall County50.9+0.3 pts
49Campbell County50.9-1.6 pts
50Hand County50.7-0.7 pts
51Clark County50.7+0.3 pts
52Mellette County50.6+0.4 pts
53Hutchinson County50.6-0.1 pts
54Jackson County50.50 pts
55Fall River County50.5-0 pts
56Day County50.4-0.6 pts
57Jones County50.3-0.7 pts
58McPherson County50.2-0.7 pts
59Faulk County50.10 pts
60Roberts County50.1-0.3 pts
61Custer County49.6-0.4 pts
62Hamlin County49.4-0.2 pts
63Potter County49.2-0.4 pts
64Douglas County48.4-0.6 pts
65Gregory County47.8-1.2 pts
66Jerauld County45.1-1.4 pts

Other periods

About this ranking

Residents aged 18 to 64 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.

Not comparable with working-age shares for ages 15 to 64 used in EU and World Bank statistics.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (Counties in South Dakota by population aged 18 to 64, 2022) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in South Dakota by population aged 18 to 64, 2022. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-18-64/south-dakota-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Counties in South Dakota by population aged 18 to 64, 2022. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/population-18-64/south-dakota-counties?period=2022.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in South Dakota by population aged 18 to 64, 2022 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/south-dakota-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_dakota_2022,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in South Dakota by population aged 18 to 64, 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/population-18-64/south-dakota-counties?period=2022. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in South Dakota by population aged 18 to 64, 2022
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/population-18-64/south-dakota-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/south-dakota-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest population aged 18 to 64?

Clay County, with 69.7% in 2022, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Jerauld County, with 45.1% in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Retrieved 2026-10-12.

Population aged 18 to 64: other rankings

Counties in South Dakota: more rankings