# Counties in South Carolina by population aged 18 to 64, 2025

All 46 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_18_64_share`
- Unit: %
- Definition: 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.
- Source: 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: 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.
- Web page: https://invokely.ai/rankings/population-18-64/south-carolina-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Richland County | 63.6 |
| 2 | Pickens County | 62.8 |
| 3 | Charleston County | 61.8 |
| 4 | Edgefield County | 61.1 |
| 5 | Berkeley County | 60.9 |
| 6 | Spartanburg County | 59.6 |
| 7 | Marlboro County | 59.6 |
| 8 | York County | 59.6 |
| 9 | Greenville County | 59.4 |
| 10 | Dorchester County | 59.2 |
| 11 | Lexington County | 58.4 |
| 12 | Cherokee County | 58.3 |
| 13 | Anderson County | 58.1 |
| 14 | Laurens County | 58 |
| 15 | Chester County | 57.7 |
| 16 | Sumter County | 57.2 |
| 17 | Florence County | 57.1 |
| 18 | Greenwood County | 57 |
| 19 | Lee County | 57 |
| 20 | Hampton County | 56.9 |
| 21 | Orangeburg County | 56.9 |
| 22 | Kershaw County | 56.9 |
| 23 | Chesterfield County | 56.8 |
| 24 | Bamberg County | 56.6 |
| 25 | Allendale County | 56.4 |
| 26 | Newberry County | 56.1 |
| 27 | Union County | 56 |
| 28 | Williamsburg County | 56 |
| 29 | Aiken County | 55.9 |
| 30 | Darlington County | 55.8 |
| 31 | Abbeville County | 55.7 |
| 32 | Dillon County | 55.3 |
| 33 | Lancaster County | 55.2 |
| 34 | Barnwell County | 55 |
| 35 | Jasper County | 54.9 |
| 36 | Oconee County | 54.9 |
| 37 | Colleton County | 54.8 |
| 38 | Calhoun County | 54.4 |
| 39 | Saluda County | 54.2 |
| 40 | Marion County | 54.1 |
| 41 | Clarendon County | 54.1 |
| 42 | Horry County | 53.9 |
| 43 | Fairfield County | 53.8 |
| 44 | Beaufort County | 52.9 |
| 45 | Georgetown County | 50.2 |
| 46 | McCormick County | 44.9 |