| County Number | SC Counties | Cases of 18-24 year olds with syphilis over 1990-1999 divided by population | County / State Ratio |
|---|---|---|---|
| 1 | Pickens County | 0.03 | 0.03 |
| 2 | Berkeley County | 0.25 | 0.24 |
| 3 | Dorchester County | 0.27 | 0.26 |
| 4 | Oconee County | 0.34 | 0.33 |
| 5 | Beaufort County | 0.43 | 0.42 |
| 6 | Aiken County | 0.47 | 0.46 |
| 7 | Lexington County | 0.50 | 0.49 |
| 8 | Greenville County | 0.55 | 0.53 |
| 9 | Anderson County | 0.55 | 0.54 |
| 10 | Abbeville County | 0.68 | 0.66 |
| 11 | Edgefield County | 0.70 | 0.69 |
| 12 | Laurens County | 0.81 | 0.79 |
| 13 | Horry County | 0.82 | 0.80 |
| 14 | Spartanburg County | 0.85 | 0.83 |
| 15 | Georgetown County | 0.86 | 0.84 |
| 16 | Kershaw County | 0.87 | 0.85 |
| 17 | Charleston County | 0.92 | 0.90 |
| 18 | Barnwell County | 0.98 | 0.96 |
| 19 | Richland County | 1.07 | 1.05 |
| 20 | Calhoun County | 1.07 | 1.05 |
| 21 | York County | 1.08 | 1.05 |
| 22 | Colleton County | 1.10 | 1.08 |
| 23 | Chesterfield County | 1.15 | 1.13 |
| 24 | Clarendon County | 1.24 | 1.21 |
| 25 | Jasper County | 1.27 | 1.24 |
| 26 | Dillon County | 1.30 | 1.27 |
| 27 | Hampton County | 1.49 | 1.46 |
| 28 | Union County | 1.52 | 1.48 |
| 29 | Newberry County | 1.58 | 1.54 |
| 30 | Saluda County | 1.58 | 1.54 |
| 31 | Sumter County | 1.58 | 1.55 |
| 32 | Fairfield County | 1.63 | 1.60 |
| 33 | Lee County | 1.69 | 1.65 |
| 34 | Marion County | 1.81 | 1.77 |
| 35 | Lancaster County | 1.86 | 1.82 |
| 36 | Williamsburg County | 1.93 | 1.89 |
| 37 | McCormick County | 2.17 | 2.12 |
| 38 | Bamberg County | 2.19 | 2.14 |
| 39 | Marlboro County | 2.42 | 2.36 |
| 40 | Orangeburg County | 2.42 | 2.36 |
| 41 | Florence County | 2.46 | 2.40 |
| 42 | Chester County | 2.47 | 2.42 |
| 43 | Allendale County | 2.55 | 2.49 |
| 44 | Cherokee County | 2.59 | 2.53 |
| 45 | Greenwood County | 2.66 | 2.60 |
| 46 | Darlington County | 3.07 | 3.00 |
| 47 | South Carolina | 1.02 |