Data / Rankings / Population aged 65 and over / Counties in South Dakota

Counties in South Dakota by share of population aged 65 and over

Custer County had the highest share of population aged 65 and over of 66 counties in 2023, at 34.8%. Oglala Lakota County had the lowest, at 7.7%. The median was 21.9% and the figure for South Dakota was 18.7%. Source: the U.S. Census Bureau.

Highest34.8Custer County
Lowest7.7Oglala Lakota County
Median21.966 counties
South Dakota18.7History

Top 40 counties, 2023

CSVChart (SVG)

Custer CountyCuster County: 34.8 %34.8Fall River CountyFall River County: 34.1 %34.1Potter CountyPotter County: 32.7 %32.7McPherson CountyMcPherson County: 30.9 %30.9Jerauld CountyJerauld County: 30.8 %30.8Campbell CountyCampbell County: 29.8 %29.8Gregory CountyGregory County: 28.9 %28.9Perkins CountyPerkins County: 28.1 %28.1Douglas CountyDouglas County: 27.8 %27.8Hyde CountyHyde County: 27.5 %27.5Hand CountyHand County: 27.3 %27.3Day CountyDay County: 27.3 %27.3Miner CountyMiner County: 27 %27Haakon CountyHaakon County: 26.3 %26.3Jones CountyJones County: 26.1 %26.1Faulk CountyFaulk County: 26 %26Sully CountySully County: 25.9 %25.9Lawrence CountyLawrence County: 25.4 %25.4Grant CountyGrant County: 25.3 %25.3Walworth CountyWalworth County: 25.1 %25.1Kingsbury CountyKingsbury County: 25 %25Edmunds CountyEdmunds County: 24.3 %24.3Hutchinson CountyHutchinson County: 23.7 %23.7Spink CountySpink County: 23.7 %23.7Marshall CountyMarshall County: 23.6 %23.6Brule CountyBrule County: 23.2 %23.2Tripp CountyTripp County: 23.1 %23.1Yankton CountyYankton County: 22.9 %22.9Deuel CountyDeuel County: 22.5 %22.5Sanborn CountySanborn County: 22.2 %22.2Bon Homme CountyBon Homme County: 22.1 %22.1Butte CountyButte County: 22.1 %22.1Roberts CountyRoberts County: 21.9 %21.9Aurora CountyAurora County: 21.9 %21.9Harding CountyHarding County: 21.9 %21.9Lake CountyLake County: 21.8 %21.8Clark CountyClark County: 21.6 %21.6Stanley CountyStanley County: 21.5 %21.5McCook CountyMcCook County: 21.5 %21.5Turner CountyTurner County: 21.2 %21.2
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2023 (%)Change on 2022
1Custer County34.8+1.3 pts
2Fall River County34.1+0.7 pts
3Potter County32.7+1.1 pts
4McPherson County30.9+0.6 pts
5Jerauld County30.8-0.5 pts
6Campbell County29.8+1.2 pts
7Gregory County28.9+0.7 pts
8Perkins County28.1+0.4 pts
9Douglas County27.8+0.7 pts
10Hyde County27.5+0.6 pts
11Hand County27.3+0.3 pts
12Day County27.3+0.2 pts
13Miner County27+1.6 pts
14Haakon County26.3+0.7 pts
15Jones County26.1+1.3 pts
16Faulk County26-0.6 pts
17Sully County25.9+1.1 pts
18Lawrence County25.4+0.8 pts
19Grant County25.3+0.3 pts
20Walworth County25.1+0.1 pts
21Kingsbury County25+0.2 pts
22Edmunds County24.3+0.8 pts
23Hutchinson County23.7-0 pts
24Spink County23.7+0.5 pts
25Marshall County23.6+0.4 pts
26Brule County23.2+0.8 pts
27Tripp County23.1+0.3 pts
28Yankton County22.9+0.9 pts
29Deuel County22.5+0.2 pts
30Sanborn County22.2+0.3 pts
31Bon Homme County22.1+0.2 pts
31Butte County22.1+0.6 pts
33Roberts County21.9+0.4 pts
34Aurora County21.9-0.2 pts
35Harding County21.9+0.8 pts
36Lake County21.8+0.5 pts
37Clark County21.6-0 pts
38Stanley County21.5+0.2 pts
39McCook County21.5+0.7 pts
40Turner County21.2-0 pts
41Davison County21.1+0.6 pts
42Moody County21+0.5 pts
43Union County20.6+0.5 pts
44Codington County20.3+0.7 pts
45Brown County19.6+0.5 pts
46Hughes County19.5+0.4 pts
47Pennington County19.3+0.3 pts
48Charles Mix County18.6+0.2 pts
49Beadle County18.4+0.5 pts
50Meade County18.3+0.5 pts
51Hanson County17.3+0.6 pts
52Hamlin County17.2-0.4 pts
53Mellette County16.8-0.3 pts
54Lyman County16.6+0.5 pts
55Minnehaha County15.1+0.3 pts
56Lincoln County14.9+0.4 pts
57Bennett County14.9+0.4 pts
58Brookings County14.7+0.3 pts
59Jackson County13.9+0.6 pts
60Clay County13.6+0.2 pts
61Corson County13+0.3 pts
62Dewey County10.6-0.2 pts
63Buffalo County10.50 pts
64Ziebach County10.5+0.1 pts
65Todd County8.7+0.2 pts
66Oglala Lakota County7.70 pts

Other periods

About this ranking

Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.

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 (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.

Use this data in your AI agent

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Rank Counties in South Dakota by share of population aged 65 and over using official data, and cite the source.
rank_places {"indicator":"population_65_plus_share","level":"province","within":"South Dakota","limit":10}
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Questions

Which county has the highest share of population aged 65 and over?

Custer County, with 34.8% in 2023, according to the U.S. Census Bureau.

Which county has the lowest share of population aged 65 and over?

Oglala Lakota County, with 7.7% in 2023.

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 (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. Retrieved 2026-10-09.

Population aged 65 and over: other rankings

Counties in South Dakota: more rankings