9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 43907 | Cadiz | 4,814 |
| 43988 | Scio | 2,364 |
| 43973 | Freeport | 2,341 |
| 43986 | Jewett | 1,657 |
| 43976 | Hopedale | 1,432 |
| 44699 | Tippecanoe | 673 |
| 43981 | New Athens | 171 |
| 43974 | Harrisville | 109 |
| 44693 | Deersville | 52 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Harrison County, Ohio (US Census).