| Locality | Post Code |
|---|---|
| Brooksburg, Jefferson | 47250 |
| Canaan, Jefferson | 47224 |
| Deputy, Jefferson | 47230 |
| Dupont, Jefferson | 47231 |
| Hanover, Jefferson | 47243 |
| Hanover Beach, Jefferson | 47243 |
| Jefferson Proving Ground, Jefferson | 47250 |
| Madison, Jefferson | 47250 |
| North Madison, Jefferson | 47250 |
| Paynesville, Jefferson | 47243 |