This list provides data on housing units in South Carolina by county, drawn from estimates between 2017 and 2021. The first column shows total units, while the second column shows the two highest subsets of housing in the state — single-family detached and mobile homes. Source: South Carolina Revenue and Fiscal Affairs Office
| County | Total units | Single detached | Mobile homes |
|---|---|---|---|
| South Carolina | 2,325,248 | 1,485,569 | 359,228 |
| Abbeville | 11,614 | 7,801 | 2,886 |
| Aiken | 76,584 | 52,650 | 13,882 |
| Allendale | 4,090 | 2,811 | 1,027 |
| Anderson | 88,680 | 62,912 | 14,200 |
| Bamberg | 6,688 | 4,479 | 1,584 |
| Barnwell | 9,934 | 5,913 | 2,930 |
| Beaufort | 97,503 | 61,553 | 9,691 |
| Berkeley | 91,604 | 59,240 | 15,282 |
| Calhoun | 7,069 | 4,400 | 2,429 |
| Charleston | 198,768 | 117,266 | 10,899 |
| Cherokee | 24,635 | 15,383 | 6,218 |
| Chester | 14,623 | 10,607 | 3,188 |
| Chesterfield | 20,531 | 11,781 | 7,453 |
| Clarendon | 16,027 | 8,772 | 6,015 |
| Colleton | 19,838 | 10,066 | 8,120 |
| Darlington | 29,507 | 18,222 | 8,608 |
| Dillon | 12,896 | 7,367 | 4,516 |
| Dorchester | 63,884 | 42,570 | 8,002 |
| Edgefield | 10,973 | 7,147 | 2,803 |
| Fairfield | 10,948 | 7,359 | 2,654 |
| Florence | 60,311 | 38,422 | 10,889 |
| Georgetown | 35,762 | 21,429 | 7,092 |
| Greenville | 222,937 | 150,787 | 18,389 |
| Greenwood | 31,300 | 20,916 | 3,932 |
| Hampton | 8,641 | 4,731 | 3,224 |
| Horry | 202,427 | 100,392 | 28,088 |
| Jasper | 12,572 | 7,316 | 3,695 |
| Kershaw | 28,835 | 20,308 | 6,926 |
| Lancaster | 40,163 | 31,079 | 4,776 |
| Laurens | 31,219 | 19,208 | 9,530 |
| Lee | 7,580 | 4,446 | 2,480 |
| Lexington | 126,768 | 87,514 | 22,610 |
| McCormick | 5,389 | 3,889 | 1,213 |
| Marion | 14,309 | 8,130 | 4,849 |
| Marlboro | 12,037 | 7,400 | 3,586 |
| Newberry | 18,208 | 12,564 | 4,374 |
| Oconee | 40,531 | 27,269 | 8,960 |
| Orangeburg | 41,384 | 23,684 | 13,055 |
| Pickens | 55,931 | 34,880 | 10,281 |
| Richland | 180,370 | 116,214 | 8,786 |
| Saluda | 9,284 | 5,791 | 3,007 |
| Spartanburg | 135,067 | 98,072 | 17,098 |
| Sumter | 46,839 | 29,988 | 9,951 |
| Union | 13,542 | 9,289 | 2,812 |
| Williamsburg | 14,802 | 7,800 | 5,872 |
| York | 112,644 | 75,752 | 11,366 |
