Ranking of South Carolina 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 437.45K people in South Carolina with Irish ancestry (8.61% of South Carolina population). Among all South Carolina counties, Oconee County had the highest percentage of its population with Irish ancestry (13.44%), followed by Beaufort County (11.98%), and Horry County (11.90%).
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 Carolina.
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Related Topics: South Carolina ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of South Carolina Counties By Percentage of Population with Irish Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Oconee County | 13.44 |
| 2 | Beaufort County | 11.98 |
| 3 | Horry County | 11.90 |
| 4 | Pickens County | 11.72 |
| 5 | Georgetown County | 10.76 |
| 6 | York County | 10.75 |
| 7 | Lancaster County | 10.26 |
| 8 | Dorchester County | 9.98 |
| 9 | Anderson County | 9.85 |
| 10 | Lexington County | 9.78 |
| 11 | Charleston County | 9.70 |
| 12 | Greenville County | 9.68 |
| 13 | Berkeley County | 8.93 |
| 14 | Aiken County | 8.87 |
| 15 | Spartanburg County | 8.85 |
| 16 | McCormick County | 8.33 |
| 17 | Kershaw County | 8.01 |
| 18 | Union County | 7.86 |
| 19 | Jasper County | 7.83 |
| 20 | Laurens County | 7.46 |
| 21 | Abbeville County | 7.07 |
| 22 | Darlington County | 6.66 |
| 23 | Cherokee County | 6.22 |
| 24 | Greenwood County | 6.15 |
| 25 | Saluda County | 5.96 |
| 26 | Chesterfield County | 5.94 |
| 27 | Clarendon County | 5.83 |
| 28 | Florence County | 5.43 |
| 29 | Edgefield County | 5.41 |
| 30 | Newberry County | 5.37 |
| 30 | Richland County | 5.37 |
| 31 | Sumter County | 5.26 |
| 32 | Colleton County | 5.17 |
| 33 | Chester County | 5.14 |
| 34 | Calhoun County | 4.14 |
| 35 | Fairfield County | 3.33 |
| 36 | Marlboro County | 3.22 |
| 37 | Lee County | 2.71 |
| 38 | Dillon County | 2.60 |
| 39 | Orangeburg County | 2.40 |
| 40 | Williamsburg County | 2.30 |
| 41 | Hampton County | 2.10 |
| 42 | Barnwell County | 2.01 |
| 43 | Marion County | 1.73 |
| 44 | Allendale County | 1.55 |
| 45 | Bamberg County | 1.02 |
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