19 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 48601 | Saginaw | 31,601 |
| 48603 | Saginaw | 27,757 |
| 48602 | Saginaw | 27,127 |
| 48623 | Freeland | 15,129 |
| 48638 | Saginaw | 12,875 |
| 48609 | Saginaw | 11,966 |
| 48604 | Saginaw | 11,011 |
| 48415 | Birch Run | 8,918 |
| 48734 | Frankenmuth | 7,746 |
| 48616 | Chesaning | 7,577 |
| 48626 | Hemlock | 5,766 |
| 48655 | Saint Charles | 5,760 |
| 48722 | Bridgeport | 3,127 |
| 48637 | Merrill | 3,024 |
| 48417 | Burt | 2,222 |
| 48649 | Oakley | 1,699 |
| 48607 | Saginaw | 1,614 |
| 48724 | Carrollton | 1,229 |
| 48614 | Brant | 943 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 19 ZCTAs in Saginaw County, Michigan (US Census).