| Locality | Post Code |
|---|---|
| Beaverdam, Allen | 45808 |
| Bluffton, Allen | 45817 |
| Cairo, Allen | 45820 |
| Delphos, Allen | 45833 |
| Elida, Allen | 45807 |
| Fort Shawnee, Allen | 45806 |
| Gomer, Allen | 45809 |
| Harrod, Allen | 45850 |
| Lafayette, Allen | 45854 |
| Lima, Allen | 45801, 45804, 45805, 45806, 45807 |
| Spencerville, Allen | 45887 |