| Zip Code | City | Population ↓ |
|---|---|---|
| 43140 | London | 23,812 |
| 43064 | Plain City | 17,188 |
| 43162 | West Jefferson | 6,837 |
| 43143 | Mount Sterling | 5,931 |
| 43153 | South Solon | 1,113 |
| 43029 | Irwin | 532 |
| 43151 | Sedalia | 257 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Madison County, Ohio (US Census).