Ranking of South Carolina Counties By Population in 2020
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2020, the Population for South Carolina was 5.13M. Among all South Carolina counties, Greenville County had the highest population (527.27K), followed by Richland County (415.70K), and Charleston County (409.96K).
The chart below shows the top 10 counties, and the table below shows the ranking of all South Carolina counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: South Carolina Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2020 Census.
See this for other years:
Ranking of South Carolina Counties By Population in 2020
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| Rank | County | Population |
|---|---|---|
| 1 | Greenville County | 527266 |
| 2 | Richland County | 415697 |
| 3 | Charleston County | 409958 |
| 4 | Horry County | 353779 |
| 5 | Spartanburg County | 329405 |
| 6 | Lexington County | 294993 |
| 7 | York County | 283862 |
| 8 | Berkeley County | 231508 |
| 9 | Anderson County | 204192 |
| 10 | Beaufort County | 187829 |
| 11 | Aiken County | 169174 |
| 12 | Dorchester County | 162059 |
| 13 | Florence County | 136814 |
| 14 | Pickens County | 131689 |
| 15 | Sumter County | 105493 |
| 16 | Lancaster County | 96592 |
| 17 | Orangeburg County | 83971 |
| 18 | Oconee County | 78787 |
| 19 | Greenwood County | 69395 |
| 20 | Laurens County | 67628 |
| 21 | Kershaw County | 65596 |
| 22 | Georgetown County | 63517 |
| 23 | Darlington County | 62842 |
| 24 | Cherokee County | 56226 |
| 25 | Chesterfield County | 43254 |
| 26 | Colleton County | 38538 |
| 27 | Newberry County | 37738 |
| 28 | Chester County | 32291 |
| 29 | Williamsburg County | 30921 |
| 30 | Clarendon County | 30841 |
| 31 | Jasper County | 29148 |
| 32 | Marion County | 29082 |
| 33 | Dillon County | 28280 |
| 34 | Union County | 27182 |
| 35 | Marlboro County | 26496 |
| 36 | Edgefield County | 25673 |
| 37 | Abbeville County | 24262 |
| 38 | Fairfield County | 20872 |
| 39 | Barnwell County | 20590 |
| 40 | Saluda County | 18908 |
| 41 | Hampton County | 18525 |
| 42 | Lee County | 16546 |
| 43 | Calhoun County | 14113 |
| 44 | Bamberg County | 13261 |
| 45 | McCormick County | 9522 |
| 46 | Allendale County | 7934 |