18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Marinette | 1 | 11,145 | 11,116 | 0.05% | 1,590 | 7 | City |
| Marinette | 2 | 11,145 | 11,115 | 0.05% | 1,590 | 7 | City |
| Peshtigo | 3 | 3,407 | 3,417 | -0.06% | 1,170 | 3 | City |
| Peshtigo | 4 | 3,407 | 3,416 | -0.06% | 1,170 | 3 | City |
| Niagara | 5 | 1,572 | 1,604 | -0.44% | 569 | 3 | City |
| Niagara | 6 | 1,572 | 1,604 | -0.44% | 569 | 3 | City |
| Crivitz | 7 | 1,124 | 1,093 | 0.54% | 709 | 2 | Village |
| Crivitz | 8 | 1,124 | 1,093 | 0.54% | 709 | 2 | Village |
| Coleman | 9 | 731 | 729 | 0% | 541 | 1 | Village |
| Coleman | 10 | 731 | 729 | 0% | 541 | 1 | Village |
| Wausaukee | 11 | 592 | 596 | -0.17% | 430 | 1 | Village |
| Wausaukee | 12 | 592 | 596 | -0.17% | 430 | 1 | Village |
| Pound | 13 | 346 | 353 | -0.57% | 390 | 1 | Village |
| Pound | 14 | 346 | 353 | -0.57% | 390 | 1 | Village |
| Pembine | 15 | 230 | 203 | 0.88% | 387 | 1 | CDP |
| Goodman | 16 | 182 | 276 | -3.19% | 110 | 2 | CDP |
| Amberg | 17 | 111 | 175 | -4.31% | 69 | 2 | CDP |
| Dunbar | 18 | 108 | 56 | 8% | 102 | 1 | CDP |
Marinette is the largest city in Marinette County, with a population of 11,145.
Dunbar is the smallest city in Marinette County, with a population of 108.
There are 18 cities in Marinette County, Wisconsin.