Founded in 1840, Ogemaw County is one of 83 counties in the state of Michigan. Historically, Ogemaw County was formed from unorganized territory. Annexed to Iosco County in 1867 and reinstated in 1873. The city of West Branch is the county seat. With FIPS code of 129, Ogemaw County has a population of 20,726 and area of 575 square miles (1,489 km2).
List of all cities in Ogemaw County, MI alphabetically
| City/Town | Postal Code | Area Code |
| Lupton, MI | 48635 | 989 |
| Prescott, MI | 48756 | 989 |
| Roos, MI | 48756 | 989 |
| Rose City, MI | 48654 | 989 |
| South Branch, MI | 48761 | 989 |
| West Branch, MI | 48661 | 989 |