4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Spooner | 1 | 2,496 | 2,483 | 0.08% | 619 | 4 | City |
| Shell Lake | 2 | 1,399 | 1,367 | 0.43% | 239 | 6 | City |
| Minong | 3 | 559 | 548 | 0.36% | 367 | 2 | Village |
| Birchwood | 4 | 409 | 403 | 0.25% | 379 | 1 | Village |
Spooner is the largest city in Washburn County, with a population of 2,496.
Birchwood is the smallest city in Washburn County, with a population of 409.
There are 4 cities in Washburn County, Wisconsin.