7 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Coos Bay | 1 | 15,708 | 15,986 | -0.29% | 1,478 | 11 | City |
| North Bend | 2 | 9,917 | 10,312 | -0.66% | 2,522 | 4 | City |
| Coquille | 3 | 3,954 | 4,008 | -0.23% | 1,431 | 3 | City |
| Bandon | 4 | 3,299 | 3,334 | -0.18% | 1,195 | 3 | City |
| Myrtle Point | 5 | 2,464 | 2,482 | -0.12% | 1,533 | 2 | City |
| Lakeside | 6 | 1,837 | 1,899 | -0.54% | 919 | 2 | City |
| Powers | 7 | 700 | 709 | -0.14% | 1,199 | 1 | City |
Coos Bay is the largest city in Coos County, with a population of 15,708.
Powers is the smallest city in Coos County, with a population of 700.
There are 7 cities in Coos County, Oregon.