Founded in 1822, Saginaw County is one of 83 counties in the state of Michigan. Historically, Saginaw County was formed from part of Oakland County. The city of Saginaw is the county seat. With FIPS code of 145, Saginaw County has a population of 189,591 and area of 816 square miles (2,113 km2).
List of all cities in Saginaw County, MI alphabetically
| City/Town | Postal Code | Area Code |
| Ameritech, MI | 48663 | 989 |
| AT&T, MI | 48663 | 989 |
| Birch Run, MI | 48415 | 989 |
| Boardwalk, MI | 48638 | 989 |
| Brant, MI | 48614 | 989 |
| Bridgeport, MI | 48722 | 989 |
| Burt, MI | 48417 | 989 |
| Carrollton, MI | 48724 | 989 |
| Chesaning, MI | 48616 | 989 |
| Frankenmuth, MI | 48734 | 989 |
| 48787 | 989 | |
| Frankenmuth Mutual Ins Co, MI | 48787 | 989 |
| Freeland, MI | 48623 | 989 |
| Hemlock, MI | 48626 | 989 |
| Merrill, MI | 48637 | 989 |
| Oakley, MI | 48649 | 989 |
| Saginaw, MI | 48601 | 989 |
| 48602 | 989 | |
| 48603 | 989 | |
| 48604 | 989 | |
| 48605 | 989 | |
| 48606 | 989 | |
| 48607 | 989 | |
| 48608 | 989 | |
| 48609 | 989 | |
| 48638 | 989 | |
| 48663 | 989 | |
| Saint Charles, MI | 48655 | 989 |