| Zip Code | City | Population ↓ |
|---|---|---|
| 45638 | Ironton | 20,594 |
| 45680 | South Point | 11,968 |
| 45669 | Proctorville | 10,237 |
| 45619 | Chesapeake | 7,509 |
| 45659 | Pedro | 3,166 |
| 45645 | Kitts Hill | 2,760 |
| 45678 | Scottown | 1,128 |
| 45696 | Willow Wood | 538 |
| 45688 | Waterloo | 166 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Lawrence County, Ohio (US Census).