Ranking of South Dakota Counties By Percentage of Population with Irish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 87.24K people in South Dakota with Irish ancestry (9.89% of South Dakota population). Among all South Dakota counties, Faulk County had the highest percentage of its population with Irish ancestry (17.71%), followed by Clay County (15.52%), and Custer County (15.23%).
The chart and table below shows the top 10 counties with high percentage of its population having Irish ancestry.
You can see similar information for other states and for other ancestry groups in South Dakota.
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Related Topics: South Dakota ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of South Dakota Counties By Percentage of Population with Irish Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Faulk County | 17.71 |
| 2 | Clay County | 15.52 |
| 3 | Custer County | 15.23 |
| 4 | Fall River County | 14.95 |
| 5 | Haakon County | 14.62 |
| 6 | Perkins County | 13.97 |
| 7 | Lawrence County | 13.35 |
| 8 | Spink County | 12.77 |
| 9 | Butte County | 12.65 |
| 10 | Meade County | 12.32 |
| 11 | Pennington County | 11.91 |
| 12 | Union County | 11.84 |
| 13 | Tripp County | 11.75 |
| 14 | Harding County | 11.11 |
| 15 | McCook County | 11.06 |
| 16 | Minnehaha County | 10.90 |
| 17 | Hughes County | 10.78 |
| 17 | Lake County | 10.78 |
| 18 | McPherson County | 10.69 |
| 19 | Kingsbury County | 10.52 |
| 20 | Codington County | 10.32 |
| 21 | Hand County | 10.13 |
| 22 | Yankton County | 10.06 |
| 23 | Brookings County | 9.78 |
| 24 | Jerauld County | 9.72 |
| 25 | Hyde County | 9.63 |
| 26 | Sully County | 9.38 |
| 27 | Lyman County | 9.32 |
| 28 | Lincoln County | 9.26 |
| 29 | Davison County | 8.99 |
| 30 | Jones County | 8.73 |
| 31 | Beadle County | 8.61 |
| 32 | Bon Homme County | 8.49 |
| 33 | Clark County | 8.41 |
| 34 | Turner County | 8.35 |
| 35 | Deuel County | 8.03 |
| 36 | Sanborn County | 7.93 |
| 37 | Brule County | 7.68 |
| 38 | Hanson County | 7.61 |
| 39 | Hutchinson County | 7.54 |
| 40 | Edmunds County | 7.19 |
| 41 | Charles Mix County | 7.12 |
| 42 | Grant County | 7.11 |
| 43 | Brown County | 7.09 |
| 43 | Marshall County | 7.09 |
| 44 | Douglas County | 6.91 |
| 45 | Gregory County | 6.84 |
| 46 | Stanley County | 6.58 |
| 47 | Miner County | 6.45 |
| 48 | Jackson County | 6.42 |
| 49 | Moody County | 6.39 |
| 50 | Potter County | 6.20 |
| 51 | Aurora County | 5.74 |
| 51 | Day County | 5.74 |
| 52 | Hamlin County | 5.47 |
| 53 | Bennett County | 5.25 |
| 54 | Walworth County | 5.06 |
| 55 | Ziebach County | 4.96 |
| 56 | Corson County | 3.46 |
| 57 | Roberts County | 3.29 |
| 58 | Campbell County | 2.84 |
| 59 | Mellette County | 2.40 |
| 60 | Dewey County | 2.23 |
| 61 | Oglala Lakota County | 1.30 |
| 62 | Todd County | 1.07 |
| 63 | Buffalo County | 1.06 |
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