| Locality | Post Code |
|---|---|
| Bismarck, Saint Francois | 63624 |
| Blackwell, Saint Francois | 63626 |
| Bonne Terre, Saint Francois | 63628 |
| Desloge, Saint Francois | 63601, 63628 |
| Doe Run, Saint Francois | 63637 |
| Elvins, Saint Francois | 63601 |
| Farmington, Saint Francois | 63640 |
| Flat River, Saint Francois | 63601 |
| Frankclay, Saint Francois | 63601 |
| French Village, Saint Francois | 63036 |
| Irondale, Saint Francois | 63648 |
| Ironton, Saint Francois | 63650 |
| Knob Lick, Saint Francois | 63651 |
| Leadington, Saint Francois | 63601, 63640 |
| Leadwood, Saint Francois | 63653 |
| Libertyville, Saint Francois | 63640 |
| Park Hills, Saint Francois | 63601 |
| Rivermines, Saint Francois | 63601 |
| Valles Mines, Saint Francois | 63087 |