| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Marquette | 1 | 22,111 | 21,118 | 0.76% | 1,950 | 11 | City |
| Forsyth | 2 | 6,305 | 6,190 | 0.22% | 35 | 178 | Township |
| Ishpeming | 3 | 6,216 | 6,153 | 0.18% | 711 | 9 | City |
| Chocolay | 4 | 6,028 | 5,910 | 0.23% | 102 | 59 | Township |
| Negaunee | 5 | 4,673 | 4,618 | 0.21% | 348 | 13 | City |
| Marquette | 6 | 4,204 | 4,136 | 0.19% | 76 | 55 | Township |
| Ishpeming | 7 | 3,457 | 3,392 | 0.23% | 40 | 86 | Township |
| Negaunee | 8 | 3,299 | 3,241 | 0.21% | 78 | 42 | Township |
| Sands | 9 | 2,373 | 2,306 | 0.42% | 36 | 66 | Township |
| Ely | 10 | 1,944 | 1,901 | 0.26% | 14 | 137 | Township |
| Tilden | 11 | 1,066 | 1,038 | 0.38% | 12 | 90 | Township |
| Republic | 12 | 1,010 | 994 | 0.2% | 9.0 | 111 | Township |
| Skandia | 13 | 837 | 818 | 0.24% | 12 | 72 | Township |
| Powell | 14 | 767 | 752 | 0.26% | 5.0 | 154 | Township |
| Marquette | 15 | 628 | 612 | 0.64% | 6.0 | 97 | Township |
| Humboldt | 16 | 433 | 424 | 0.23% | 5.0 | 93 | Township |
| Michigamme | 17 | 337 | 333 | 0% | 3.0 | 133 | Township |
| Champion | 18 | 259 | 252 | 0.78% | 2.0 | 121 | Township |
| Ewing | 19 | 154 | 151 | 0% | 3.0 | 48 | Township |
| Turin | 20 | 114 | 112 | 0% | 1.0 | 84 | Township |
Marquette is the largest city in Marquette County, with a population of 22,111.
Turin is the smallest city in Marquette County, with a population of 114.
There are 20 cities in Marquette County, Michigan.