| Zip Code | City | Population ↓ |
|---|---|---|
| 63640 | Farmington | 29,073 |
| 63601 | Park Hills | 16,424 |
| 63628 | Bonne Terre | 15,312 |
| 63624 | Bismarck | 3,678 |
| 63653 | Leadwood | 1,353 |
| 63036 | French Village | 1,352 |
| 63087 | Valles Mines | 1,140 |
| 63637 | Doe Run | 859 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in St. Francois County, Missouri (US Census).