| Locality | Post Code |
|---|---|
| Applegate, Sanilac | 48401 |
| Argyle, Sanilac | 48410 |
| Brown City, Sanilac | 48416 |
| Carsonville, Sanilac | 48419 |
| Cass City, Sanilac | 48726 |
| Croswell, Sanilac | 48422 |
| Decker, Sanilac | 48426 |
| Deckerville, Sanilac | 48427 |
| Forestville, Sanilac | 48434 |
| Jeddo, Sanilac | 48032 |
| Lexington, Sanilac | 48450 |
| Marlette, Sanilac | 48453 |
| Melvin, Sanilac | 48454 |
| Minden, Sanilac | 48456 |
| Minden City, Sanilac | 48456 |
| Palms, Sanilac | 48465 |
| Peck, Sanilac | 48466 |
| Port Sanilac, Sanilac | 48469 |
| Sandusky, Sanilac | 48471 |
| Snover, Sanilac | 48472 |
| Ubly, Sanilac | 48475 |
| Yale, Sanilac | 48097 |