| County Number | SC Counties | Initiation of Prenatal Care by Mothers Ages 18-29 in County, 1990-1999, after 1st trimester | County / State Ratio |
|---|---|---|---|
| 1 | Anderson County | 15.7 | 1.15 |
| 2 | Dorchester County | 18.1 | 1.12 |
| 3 | Abbeville County | 18.5 | 1.11 |
| 4 | Pickens County | 19.8 | 1.10 |
| 5 | Berkeley County | 19.9 | 1.10 |
| 6 | Oconee County | 21.1 | 1.08 |
| 7 | Florence County | 22.1 | 1.07 |
| 8 | Greenwood County | 22.5 | 1.06 |
| 9 | Lexington County | 24.0 | 1.04 |
| 10 | Greenville County | 24.1 | 1.04 |
| 11 | Cherokee County | 24.5 | 1.03 |
| 12 | Lancaster County | 24.8 | 1.03 |
| 13 | Aiken County | 25.1 | 1.02 |
| 14 | Beaufort County | 25.1 | 1.02 |
| 15 | Colleton County | 25.2 | 1.02 |
| 16 | Laurens County | 25.7 | 1.02 |
| 17 | Darlington County | 25.8 | 1.02 |
| 18 | Horry County | 26.2 | 1.01 |
| 19 | Union County | 26.9 | 1.00 |
| 20 | Calhoun County | 27.1 | 1.00 |
| 21 | Kershaw County | 27.1 | 1.00 |
| 22 | McCormick County | 27.2 | 1.00 |
| 23 | Charleston County | 27.6 | 0.99 |
| 24 | Edgefield County | 27.6 | 0.99 |
| 25 | Sumter County | 28.0 | 0.98 |
| 26 | York County | 28.3 | 0.98 |
| 27 | Orangeburg County | 28.4 | 0.98 |
| 28 | Newberry County | 29.4 | 0.97 |
| 29 | Chesterfield County | 29.5 | 0.96 |
| 30 | Saluda County | 29.6 | 0.96 |
| 31 | Lee County | 29.7 | 0.96 |
| 32 | Bamberg County | 29.9 | 0.96 |
| 33 | Barnwell County | 32.1 | 0.93 |
| 34 | Spartanburg County | 32.3 | 0.93 |
| 35 | Marion County | 32.8 | 0.92 |
| 36 | Jasper County | 33.7 | 0.91 |
| 37 | Williamsburg County | 34.7 | 0.89 |
| 38 | Richland County | 35.1 | 0.89 |
| 39 | Georgetown County | 35.5 | 0.88 |
| 40 | Clarendon County | 35.7 | 0.88 |
| 41 | Chester County | 36.6 | 0.87 |
| 42 | Marlboro County | 37.9 | 0.85 |
| 43 | Fairfield County | 38.4 | 0.84 |
| 44 | Hampton County | 38.7 | 0.84 |
| 45 | Dillon County | 40.2 | 0.82 |
| 46 | Allendale County | 42.9 | 0.78 |
| 47 | South Carolina | 26.9 |