Founded in 1861, Keweenaw County is one of 83 counties in the state of Michigan. Historically, Keweenaw County was formed from part of Houghton County. The city of Eagle River is the county seat. With FIPS code of 83, Keweenaw County has a population of 2,107 and area of 5,966 square miles (15,452 km2).
List of all cities in Keweenaw County, MI alphabetically
| City/Town | Postal Code | Area Code |
| Ahmeek, MI | 49901 | 906 |
| Allouez, MI | 49805 | 906 |
| Calumet, MI | 49918 | 906 |
| Copper Harbor, MI | 49918 | 906 |
| Eagle Harbor, MI | 49950 | 906 |
| Eagle River, MI | 49950 | 906 |
| Mohawk, MI | 49950 | 906 |