Founded in 1829, Branch County is one of 83 counties in the state of Michigan. Historically, Branch County was formed from unorganized territory. The city of Coldwater is the county seat. With FIPS code of 23, Branch County has a population of 44,985 and area of 519 square miles (1,344 km2).
List of all cities in Branch County, MI alphabetically
| City/Town | Postal Code | Area Code |
| Bronson, MI | 49028 | 517 |
| Coldwater, MI | 49036 | 517 |
| Montgomery, MI | 49255 | 517 |
| Quincy, MI | 49082 | 517 |
| Sherwood, MI | 49089 | 517 |
| Union City, MI | 49094 | 517 |