Founded in 1831, Gladwin County is one of 83 counties in the state of Michigan. Historically, Gladwin County was formed from unorganized territory. The city of Gladwin is the county seat. With FIPS code of 51, Gladwin County has a population of 25,485 and area of 516 square miles (1,336 km2).
List of all cities in Gladwin County, MI alphabetically
| City/Town | Postal Code | Area Code |
| Beaverton, MI | 48612 | 989 |
| Gladwin, MI | 48624 | 989 |
| Rhodes, MI | 48652 | 989 |