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Median Age in South Dakota, by County

Median Age for every county in South Dakota, ranked. The highest is Custer County at 57.6 and the lowest is Buffalo County at 22.8.

South Dakota: 38.0 · United States: 38.9 · median county in South Dakota: 41.5

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#County Median Age
1Custer County57.6
2Fall River County55.3
3Hyde County53.7
4Campbell County50.9
5McPherson County50.0
6Potter County49.9
7Miner County48.4
8Haakon County47.9
9Jerauld County46.9
10Sully County46.9
11Harding County46.3
12Spink County45.5
13Tripp County45.0
14Day County44.8
15Lawrence County44.8
16Gregory County44.7
17Grant County44.5
18Stanley County44.5
19Edmunds County44.0
20Perkins County44.0
21Lake County43.8
22Faulk County42.9
23Hand County42.5
24Marshall County42.5
25Yankton County42.5
26Bon Homme County42.1
27Hutchinson County42.1
28Kingsbury County42.1
29Douglas County42.0
30Deuel County41.8
31Aurora County41.7
32Walworth County41.7
33Brule County41.5
34Union County41.5
35Turner County41.2
36Moody County40.8
37Codington County40.4
38Clark County40.3
39Butte County40.2
40Pennington County40.1
41Sanborn County40.1
42Davison County39.6
43Hughes County39.5
44McCook County39.5
45Roberts County38.5
46Hanson County38.3
47Brown County37.8
48Beadle County37.6
49Mellette County37.5
50Meade County37.3
51Ziebach County36.7
52Lyman County36.1
53Charles Mix County36.0
54Minnehaha County36.0
55Lincoln County35.9
56Jackson County34.3
57Jones County33.9
58Hamlin County31.8
59Corson County29.9
60Oglala Lakota County28.2
61Brookings County28.0
62Dewey County27.7
63Bennett County27.4
64Todd County25.5
65Clay County24.9
66Buffalo County22.8

Half of residents are older than this and half are younger.

Source: ACS 2020-2024 5-Year Estimates, 2024.

South Dakota ranks 40th of 52 states for median age.

Median Age in other states

Other statistics for South Dakota by county