| Zip Code | City | Population ↓ |
|---|---|---|
| 48601 | Saginaw | 32,172 |
| 48603 | Saginaw | 28,426 |
| 48602 | Saginaw | 27,575 |
| 48623 | Freeland | 15,098 |
| 48609 | Saginaw | 12,339 |
| 48638 | Saginaw | 12,157 |
| 48604 | Saginaw | 11,793 |
| 48415 | Birch Run | 9,013 |
| 48616 | Chesaning | 7,486 |
| 48734 | Frankenmuth | 7,425 |
| 48626 | Hemlock | 5,899 |
| 48655 | Saint Charles | 5,773 |
| 48722 | Bridgeport | 3,264 |
| 48637 | Merrill | 3,104 |
| 48417 | Burt | 2,382 |
| 48607 | Saginaw | 1,676 |
| 48649 | Oakley | 1,309 |
| 48614 | Brant | 978 |
| 48724 | Carrollton | 796 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 19 ZCTAs in Saginaw County, Michigan (US Census).