18 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 48422 | Croswell | 6,094 |
| 48471 | Sandusky | 5,414 |
| 48453 | Marlette | 5,046 |
| 48416 | Brown City | 4,996 |
| 48450 | Lexington | 4,320 |
| 48427 | Deckerville | 2,861 |
| 48419 | Carsonville | 2,268 |
| 48475 | Ubly | 2,235 |
| 48466 | Peck | 1,514 |
| 48469 | Port Sanilac | 1,388 |
| 48472 | Snover | 1,359 |
| 48401 | Applegate | 1,323 |
| 48426 | Decker | 1,317 |
| 48454 | Melvin | 1,175 |
| 48456 | Minden City | 788 |
| 48465 | Palms | 458 |
| 48434 | Forestville | 136 |
| 48410 | Argyle | 77 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 18 ZCTAs in Sanilac County, Michigan (US Census).