| County Number | County | % of deaths of persons 18-29 during the 1990s that were preventable | County / State Ratio |
|---|---|---|---|
| 1 | Lee County | 60.9 | 0.81 |
| 2 | Clarendon County | 63.3 | 0.84 |
| 3 | McCormick County | 64.4 | 0.86 |
| 4 | Marion County | 68.1 | 0.91 |
| 5 | Dorchester County | 68.6 | 0.91 |
| 6 | Darlington County | 68.7 | 0.91 |
| 7 | Bamberg County | 69.7 | 0.93 |
| 8 | Richland County | 70.1 | 0.93 |
| 9 | Sumter County | 70.6 | 0.94 |
| 10 | Union County | 70.9 | 0.94 |
| 11 | Orangeburg County | 71.0 | 0.95 |
| 12 | Georgetown County | 71.3 | 0.95 |
| 13 | Laurens County | 71.8 | 0.96 |
| 14 | York County | 71.9 | 0.96 |
| 15 | Newberry County | 72.4 | 0.96 |
| 16 | Calhoun County | 73.3 | 0.98 |
| 17 | Lexington County | 73.5 | 0.98 |
| 18 | Dillon County | 74.2 | 0.99 |
| 19 | Spartanburg County | 74.5 | 0.99 |
| 20 | Beaufort County | 74.6 | 0.99 |
| 21 | Charleston County | 74.8 | 1.00 |
| 22 | Williamsburg County | 75.7 | 1.01 |
| 23 | Florence County | 76.1 | 1.01 |
| 24 | Greenwood County | 76.1 | 1.01 |
| 25 | Saluda County | 76.9 | 1.02 |
| 26 | Horry County | 77.1 | 1.03 |
| 27 | Jasper County | 77.8 | 1.04 |
| 28 | Oconee County | 77.8 | 1.04 |
| 29 | Cherokee County | 78.1 | 1.04 |
| 30 | Kershaw County | 78.2 | 1.04 |
| 31 | Berkeley County | 78.6 | 1.05 |
| 32 | Greenville County | 78.6 | 1.05 |
| 33 | Hampton County | 78.6 | 1.05 |
| 34 | Aiken County | 78.9 | 1.05 |
| 35 | Anderson County | 79.6 | 1.06 |
| 36 | Chesterfield County | 79.9 | 1.06 |
| 37 | Allendale County | 80.0 | 1.07 |
| 38 | Edgefield County | 80.6 | 1.07 |
| 39 | Chester County | 81.3 | 1.08 |
| 40 | Colleton County | 81.3 | 1.08 |
| 41 | Abbeville County | 81.6 | 1.09 |
| 42 | Lancaster County | 82.2 | 1.09 |
| 43 | Pickens County | 82.7 | 1.10 |
| 44 | Fairfield County | 83.1 | 1.11 |
| 45 | Barnwell County | 86.2 | 1.15 |
| 46 | Marlboro County | 92.3 | 1.23 |
| 47 | South Carolina | 75.1 |