| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 48611 | Auburn | Bay County | Standard |
| 48613 | Bentley | Bay County | Standard |
| 48623 | Freeland | Saginaw County | Standard |
| 48631 | Kawkawlin | Bay County | Standard |
| 48634 | Linwood | Bay County | Standard |
| 48642 | Midland | Midland County | Standard |
| 48650 | Pinconning | Bay County | Standard |
| 48652 | Rhodes | Gladwin County | Standard |
| 48658 | Standish | Arenac County | Standard |
| 48659 | Sterling | Arenac County | Standard |
| 48706 | Bay City | Bay County | Standard |
| 48707 | Bay City | Bay County | PO Box |
| 48708 | Bay City | Bay County | Standard |
| 48710 | University Center | Bay County | Unique |
| 48732 | Essexville | Bay County | Standard |
| 48747 | Munger | Bay County | Standard |