| Locality | Post Code |
|---|---|
| Buckskin, Gibson | 47647 |
| Fort Branch, Gibson | 47648 |
| Francisco, Gibson | 47649 |
| Haubstadt, Gibson | 47639 |
| Hazleton, Gibson | 47640 |
| Mackey, Gibson | 47654 |
| Oakland City, Gibson | 47660 |
| Owensville, Gibson | 47665 |
| Patoka, Gibson | 47666 |
| Princeton, Gibson | 47670 |
| Somerville, Gibson | 47683 |
| Warrenton, Gibson | 47639 |