| Zip Code | City | Population ↓ |
|---|---|---|
| 63435 | Canton | 4,205 |
| 63448 | La Grange | 1,436 |
| 63447 | La Belle | 1,217 |
| 63452 | Lewistown | 1,185 |
| 63440 | Ewing | 1,012 |
| 63457 | Monticello | 494 |
| 63473 | Williamstown | 318 |
| 63438 | Durham | 232 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Lewis County, Missouri (US Census).