| Locality | Post Code |
|---|---|
| Beech, Marion | 50225 |
| Bussey, Marion | 50044 |
| Columbia, Marion | 50057 |
| Dallas, Marion | 50062 |
| Durham, Marion | 50119 |
| Hamilton, Marion | 50116 |
| Harvey, Marion | 50119 |
| Knoxville, Marion | 50138 |
| Lacona, Marion | 50139 |
| Marysville, Marion | 50116 |
| Melcher, Marion | 50163 |
| Melcher Dallas, Marion | 50062, 50163 |
| Monroe, Marion | 50170 |
| Otley, Marion | 50214 |
| Painted Rocks, Marion | 50214 |
| Park Hills, Marion | 50214 |
| Pella, Marion | 50219 |
| Pershing, Marion | 50138 |
| Pleasantville, Marion | 50225 |
| Runnells, Marion | 50237 |
| Swan, Marion | 50252 |
| Tracy, Marion | 50256 |