13 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 45875 | Ottawa | 11,547 |
| 45830 | Columbus Grove | 5,199 |
| 45856 | Leipsic | 5,042 |
| 45831 | Continental | 3,233 |
| 45844 | Fort Jennings | 3,059 |
| 45877 | Pandora | 2,562 |
| 45827 | Cloverdale | 2,186 |
| 45853 | Kalida | 1,526 |
| 45876 | Ottoville | 829 |
| 45864 | Miller City | 225 |
| 45893 | Vaughnsville | 160 |
| 45815 | Belmore | 81 |
| 45848 | Glandorf | 76 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 13 ZCTAs in Putnam County, Ohio (US Census).