| Locality | Post Code |
|---|---|
| Ackley, Franklin | 50601 |
| Alden, Franklin | 50006 |
| Alexander, Franklin | 50420 |
| Aredale, Franklin | 50605 |
| Bradford, Franklin | 50041 |
| Chapin, Franklin | 50427 |
| Coulter, Franklin | 50431 |
| Dougherty, Franklin | 50433 |
| Dows, Franklin | 50071 |
| Dumont, Franklin | 50625 |
| Geneva, Franklin | 50633 |
| Hampton, Franklin | 50441 |
| Hansell, Franklin | 50441 |
| Iowa Falls, Franklin | 50126 |
| Latimer, Franklin | 50452 |
| Meservey, Franklin | 50457 |
| Popejoy, Franklin | 50227 |
| Sheffield, Franklin | 50475 |