Founded in 1840 (boundaries declared) and 1857 (organized), Alpena County is one of 83 counties in the state of Michigan. Historically, Alpena County was formed from part of Mackinac County, and unorganized territory which was named Anamickee County until 1843. The city of Alpena is the county seat. With FIPS code of 7, Alpena County has a population of 28,893 and area of 1,695 square miles (4,390 km2).
List of all cities in Alpena County, MI alphabetically
| City/Town | Postal Code | Area Code |
| Alpena, MI | 49707 | 989 |
| Herron, MI | 49744 | 989 |
| Hubbard Lake, MI | 49747 | 989 |
| Lachine, MI | 49753 | 989 |
| Ossineke, MI | 49766 | 989 |