| 43101 Adelphi | 740 | Ross County | Ohio (OH) |
| 43115 Clarksburg | 740 | Ross County | Ohio (OH) |
| 45601 Chillicothe | 740 | Ross County | Ohio (OH) |
| 45612 Bainbridge | 740 | Ross County | Ohio (OH) |
| 45617 Bourneville | 740 | Ross County | Ohio (OH) |
| 45628 Frankfort | 740 | Ross County | Ohio (OH) |
| 45633 Hallsville | 740 | Ross County | Ohio (OH) |
| 45644 Kingston | 740 | Ross County | Ohio (OH) |
| 45647 Londonderry | 740 | Ross County | Ohio (OH) |
| 45673 Richmond Dale | 740 | Ross County | Ohio (OH) |
| 45681 Lyndon | 937 | Ross County | Ohio (OH) |
| 45681 South Salem | 937 | Ross County | Ohio (OH) |