| Zip Code | City | Population ↓ |
|---|---|---|
| 44833 | Galion | 16,537 |
| 43338 | Mount Gilead | 10,033 |
| 43315 | Cardington | 7,013 |
| 43334 | Marengo | 6,229 |
| 43003 | Ashley | 3,139 |
| 43320 | Edison | 1,370 |
| 43321 | Fulton | 374 |
| 43350 | Sparta | 184 |
| 43317 | Chesterville | 179 |
| 43325 | Iberia | 80 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 10 ZCTAs in Morrow County, Ohio (US Census).