| Locality | Post Code |
|---|---|
| Clyo, Effingham | 31303 |
| Eden, Effingham | 31307 |
| Guyton, Effingham | 31312 |
| Marlow, Effingham | 31312 |
| Meldrim, Effingham | 31318 |
| Newington, Effingham | 30446 |
| Pineora, Effingham | 31312 |
| Rincon, Effingham | 31326 |
| Springfield, Effingham | 31329 |
| Stillwell, Effingham | 31329 |