7 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Allouez township | 1 | 1,543 | 1,442 | 0.78% | 28 | 54.62 | Township |
| Mohawk | 2 | 292 | 302 | 6.96% | 237 | 1.23 | CDP |
| Eagle Harbor township | 3 | 232 | 216 | 0.87% | 1 | 180.41 | Township |
| Eagle Harbor | 4 | 167 | 136 | 7.05% | 93 | 1.80 | CDP |
| Ahmeek | 5 | 124 | 114 | 1.64% | 1,824 | 0.07 | Village |
| Sherman township | 6 | 100 | 92 | 1.01% | 2 | 65.16 | Township |
| Copper Harbor | 7 | 98 | 125 | -1.01% | 65 | 1.51 | CDP |
Allouez township is the largest city in Keweenaw County, with a population of 1,543.
Copper Harbor is the smallest city in Keweenaw County.
There are 7 cities in Keweenaw County, Michigan.