| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Superior | 1 | 26,310 | 26,801 | -0.33% | 718 | 37 | City |
| Lake Nebagamon | 2 | 1,134 | 1,127 | 0% | 91 | 13 | Village |
| Solon Springs | 3 | 676 | 663 | 0.3% | 432 | 2 | Village |
| Superior | 4 | 660 | 676 | -0.6% | 531 | 1 | Village |
| Poplar | 5 | 625 | 630 | -0.16% | 53 | 12 | Village |
| Oliver | 6 | 408 | 406 | -0.24% | 197 | 2 | Village |
Superior is the largest city in Douglas County, with a population of 26,310.
Oliver is the smallest city in Douglas County, with a population of 408.
There are 6 cities in Douglas County, Wisconsin.