| Locality | Post Code |
|---|---|
| Aldrich, Polk | 65601 |
| Bolivar, Polk | 65613 |
| Brighton, Polk | 65617 |
| Cherokee Homestead Village, Polk | 65613 |
| Dunnegan, Polk | 65640 |
| Eudora, Polk | 65710 |
| Fair Play, Polk | 65649 |
| Flemington, Polk | 65650 |
| Goodson, Polk | 65663 |
| Half Way, Polk | 65663 |
| Humansville, Polk | 65674 |
| Louisburg, Polk | 65685 |
| Morrisville, Polk | 65645, 65710 |
| Pleasant Hope, Polk | 65725 |
| Polk, Polk | 65727 |
| Slagle, Polk | 65613 |
| Walnut Grove, Polk | 65770 |