This is a 1.3 percent rise in Greenville County’s population, from 526,980 in 2020 to 533,834 in 2021.
Greenville County had the largest population in South Carolina in 2021.
The US Census Bureau found more than 73 percent of counties in the US saw a natural decrease in population in 2021. This is up from a 55.5 percent increase in 2020.
The Midwest suffered the most sustained population decreases, with many counties along the US East Coast and through the Rocky Mountains seeing increases.
The US population continues to grow, though at a slower rate than before.
South Carolina Counties By Population Change from 2020 to 2021
| County | 2020 Estimated Population | 2021 Estimated Population | % Change in Population From Year to Year |
|---|---|---|---|
| Jasper County | 29,073 | 30,324 | 4.3% |
| Lancaster County | 96,652 | 100,336 | 3.8% |
| Horry County | 353,498 | 365,579 | 3.4% |
| McCormick County | 9,513 | 9,760 | 2.6% |
| Berkeley County | 231,568 | 236,701 | 2.2% |
| Beaufort County | 187,691 | 191,748 | 2.2% |
| Spartanburg County | 329,364 | 335,864 | 2% |
| Edgefield County | 25,675 | 26,153 | 1.9% |
| Lexington County | 294,891 | 300,137 | 1.8% |
| York County | 283,899 | 288,595 | 1.7% |
| Anderson County | 204,032 | 206,908 | 1.4% |
| Greenville County | 526,980 | 533,834 | 1.3% |
| Aiken County | 169,032 | 170,776 | 1% |
| Kershaw County | 65,536 | 66,130 | 0.9% |
| Charleston County | 409,418 | 413,024 | 0.9% |
| Dorchester County | 161,975 | 163,327 | 0.8% |
| Georgetown County | 63,440 | 63,921 | 0.8% |
| Newberry County | 37,715 | 37,996 | 0.7% |
| Oconee County | 78,638 | 79,203 | 0.7% |
| Pickens County | 131,602 | 132,229 | 0.5% |
| Richland County | 416,527 | 418,307 | 0.4% |
| Laurens County | 67,551 | 67,803 | 0.4% |
| Abbeville County | 24,212 | 24,299 | 0.4% |
| Calhoun County | 14,125 | 14,165 | 0.3% |
| Barnwell County | 20,567 | 20,580 | 0.1% |
| Chesterfield County | 43,258 | 43,268 | 0% |
| Saluda County | 18,830 | 18,821 | 0% |
| Darlington County | 62,833 | 62,755 | -0.1% |
| Greenwood County | 69,380 | 69,241 | -0.2% |
| Chester County | 32,276 | 32,209 | -0.2% |
| Colleton County | 38,543 | 38,462 | -0.2% |
| Florence County | 136,805 | 136,504 | -0.2% |
| Clarendon County | 31,093 | 31,024 | -0.2% |
| Cherokee County | 56,179 | 56,052 | -0.2% |
| Bamberg County | 13,251 | 13,189 | -0.5% |
| Union County | 27,148 | 27,016 | -0.5% |
| Marlboro County | 26,537 | 26,382 | -0.6% |
| Sumter County | 105,417 | 104,758 | -0.6% |
| Dillon County | 28,284 | 28,087 | -0.7% |
| Fairfield County | 20,858 | 20,690 | -0.8% |
| Marion County | 29,043 | 28,784 | -0.9% |
| Lee County | 16,458 | 16,280 | -1.1% |
| Orangeburg County | 83,958 | 82,962 | -1.2% |
| Williamsburg County | 30,902 | 30,484 | -1.4% |
| Allendale County | 7,990 | 7,858 | -1.7% |
| Hampton County | 18,512 | 18,180 | -1.8% |
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