Founded in 1840 (boundaries declared) and 1869 (organized), Alcona County is one of 83 counties in the state of Michigan. Historically, Alcona County was formed from unorganized territory which was named Negwegon County until 1843. The city of Harrisville is the county seat. With FIPS code of 1, Alcona County has a population of 10,235 and area of 1,791 square miles (4,639 km2).
List of all cities in Alcona County, MI alphabetically
| City/Town | Postal Code | Area Code |
| Barton City, MI | 48705 | 989 |
| Black River, MI | 48721 | 989 |
| Curran, MI | 48728 | 989 |
| Glennie, MI | 48737 | 989 |
| Greenbush, MI | 48738 | 989 |
| Harrisville, MI | 48740 | 989 |
| Lincoln, MI | 48742 | 989 |
| Mikado, MI | 48745 | 989 |
| Spruce, MI | 48762 | 989 |