| Zip Code | City | Population ↓ |
|---|---|---|
| 45895 | Wapakoneta | 17,655 |
| 45885 | Saint Marys | 12,926 |
| 45865 | Minster | 5,437 |
| 45869 | New Bremen | 4,451 |
| 45871 | New Knoxville | 2,030 |
| 45896 | Waynesfield | 1,684 |
| 45870 | New Hampshire | 449 |
| 45888 | Uniopolis | 319 |
| 45819 | Buckland | 258 |
| 45884 | Saint Johns | 178 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 10 ZCTAs in Auglaize County, Ohio (US Census).