| Zip Code | City | Population ↓ |
|---|---|---|
| 45601 | Chillicothe | 56,300 |
| 45628 | Frankfort | 5,434 |
| 45612 | Bainbridge | 4,622 |
| 45644 | Kingston | 4,525 |
| 43115 | Clarksburg | 1,943 |
| 45681 | South Salem | 1,480 |
| 45673 | Richmond Dale | 423 |
| 43101 | Adelphi | 365 |
| 45617 | Bourneville | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Ross County, Ohio (US Census).