29 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Marquette | 1 | 21,395 | 20,604 | 0.74% | 1,887 | 11.34 | City |
| Forsyth township | 2 | 6,302 | 6,190 | 0.29% | 35 | 177.76 | Township |
| Ishpeming | 3 | 6,207 | 6,146 | 0.19% | 710 | 8.75 | City |
| Chocolay charter township | 4 | 6,037 | 5,907 | 0.37% | 102 | 58.98 | Township |
| Negaunee | 5 | 4,669 | 4,628 | 0.17% | 347 | 13.44 | City |
| Marquette charter township | 6 | 4,204 | 4,145 | 0.21% | 76 | 55.35 | Township |
| Harvey | 7 | 3,821 | 3,637 | 4.43% | 567 | 6.74 | CDP |
| Ishpeming township | 8 | 3,454 | 3,390 | 0.29% | 40 | 86.29 | Township |
| Negaunee township | 9 | 3,303 | 3,236 | 0.36% | 78 | 42.08 | Township |
| K. I. Sawyer | 10 | 2,885 | 2,807 | 0.59% | 1,685 | 1.71 | CDP |
| West Ishpeming | 11 | 2,726 | 2,790 | 0.15% | 921 | 2.96 | CDP |
| Sands township | 12 | 2,361 | 2,307 | 0.38% | 36 | 66.40 | Township |
| Trowbridge Park | 13 | 2,147 | 2,190 | -0.09% | 1,549 | 1.39 | CDP |
| Ely township | 14 | 1,946 | 1,903 | 0.36% | 14 | 137.49 | Township |
| Gwinn | 15 | 1,233 | 1,741 | -3.6% | 438 | 2.81 | CDP |
| Tilden township | 16 | 1,068 | 1,043 | 0.38% | 12 | 89.80 | Township |
| Republic township | 17 | 1,005 | 992 | 0.2% | 9 | 111.41 | Township |
| Skandia township | 18 | 838 | 815 | 0.6% | 12 | 71.92 | Township |
| Powell township | 19 | 747 | 733 | 0.27% | 5 | 153.70 | Township |
| Marquette township | 20 | 594 | 612 | -1.33% | 6 | 97.17 | Township |
| Republic | 21 | 523 | 539 | -0.57% | 145 | 3.62 | CDP |
| Big Bay | 22 | 505 | 555 | 2.43% | 130 | 3.90 | CDP |
| Humboldt township | 23 | 423 | 414 | 0.48% | 5 | 92.76 | Township |
| Palmer | 24 | 368 | 394 | -0.81% | 621 | 0.59 | CDP |
| Michigamme township | 25 | 332 | 329 | 0% | 2 | 133.25 | Township |
| Champion township | 26 | 248 | 246 | 0% | 2 | 120.89 | Township |
| Michigamme | 27 | 215 | 215 | -1.38% | 90 | 2.38 | CDP |
| Ewing township | 28 | 156 | 151 | 0.65% | 3 | 48.29 | Township |
| Turin township | 29 | 119 | 115 | 0.85% | 1 | 83.68 | Township |
Marquette is the largest city in Marquette County, with a population of 21,395.
Turin township is the smallest city in Marquette County.
There are 29 cities in Marquette County, Michigan.