| County Number | County | Percent of Population 18-29 that died during the 1990s | County / State Ratio |
|---|---|---|---|
| 1 | Marlboro County | 0.3 | 0.25 |
| 2 | Beaufort County | 0.6 | 0.56 |
| 3 | Pickens County | 0.7 | 0.60 |
| 4 | York County | 0.9 | 0.78 |
| 5 | Edgefield County | 0.9 | 0.79 |
| 6 | Richland County | 0.9 | 0.82 |
| 7 | Charleston County | 0.9 | 0.83 |
| 8 | Greenville County | 0.9 | 0.85 |
| 9 | Greenwood County | 1.0 | 0.86 |
| 10 | Berkeley County | 1.0 | 0.88 |
| 11 | Newberry County | 1.0 | 0.89 |
| 12 | Lexington County | 1.0 | 0.93 |
| 13 | Oconee County | 1.0 | 0.94 |
| 14 | Horry County | 1.1 | 0.95 |
| 15 | Bamberg County | 1.1 | 0.97 |
| 16 | Anderson County | 1.1 | 1.00 |
| 17 | Spartanburg County | 1.2 | 1.08 |
| 18 | Abbeville County | 1.2 | 1.10 |
| 19 | Lancaster County | 1.2 | 1.11 |
| 20 | Aiken County | 1.3 | 1.13 |
| 21 | Hampton County | 1.3 | 1.15 |
| 22 | Sumter County | 1.3 | 1.16 |
| 23 | Union County | 1.3 | 1.16 |
| 24 | Dorchester County | 1.3 | 1.16 |
| 25 | Saluda County | 1.3 | 1.17 |
| 26 | Cherokee County | 1.3 | 1.20 |
| 27 | Orangeburg County | 1.3 | 1.21 |
| 28 | Laurens County | 1.3 | 1.22 |
| 29 | Florence County | 1.4 | 1.24 |
| 30 | Lee County | 1.4 | 1.24 |
| 31 | Kershaw County | 1.4 | 1.29 |
| 32 | Georgetown County | 1.5 | 1.32 |
| 33 | Chester County | 1.5 | 1.34 |
| 34 | Clarendon County | 1.5 | 1.37 |
| 35 | Calhoun County | 1.5 | 1.38 |
| 36 | Darlington County | 1.5 | 1.40 |
| 37 | Marion County | 1.6 | 1.44 |
| 38 | Allendale County | 1.6 | 1.45 |
| 39 | Barnwell County | 1.7 | 1.51 |
| 40 | Jasper County | 1.7 | 1.57 |
| 41 | Colleton County | 1.8 | 1.63 |
| 42 | Dillon County | 2.0 | 1.82 |
| 43 | Williamsburg County | 2.0 | 1.84 |
| 44 | Fairfield County | 2.0 | 1.85 |
| 45 | Chesterfield County | 2.1 | 1.90 |
| 46 | McCormick County | 5.0 | 4.52 |
| 47 | South Carolina | 1.1 |