11 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Coos Bay | 1 | 15,337 | 15,981 | -0.83% | 1,443 | 10.63 | City |
| North Bend | 2 | 9,883 | 10,310 | -0.85% | 2,513 | 3.93 | City |
| Coquille | 3 | 3,972 | 4,019 | -0.23% | 1,437 | 2.76 | City |
| Bandon | 4 | 3,288 | 3,327 | -0.24% | 1,191 | 2.76 | City |
| Myrtle Point | 5 | 2,463 | 2,482 | -0.16% | 1,533 | 1.61 | City |
| Bunker Hill | 6 | 2,268 | 2,244 | 2.49% | 1,553 | 1.46 | CDP |
| Saunders Lake | 7 | 2,208 | 1,469 | 7.18% | 776 | 2.85 | CDP |
| Lakeside | 8 | 1,824 | 1,899 | -0.82% | 912 | 2 | City |
| Barview | 9 | 1,697 | 1,704 | -0.53% | 1,228 | 1.38 | CDP |
| Glasgow | 10 | 959 | 964 | 1.37% | 298 | 3.22 | CDP |
| Powers | 11 | 707 | 712 | -0.14% | 1,211 | 0.58 | City |
Coos Bay is the largest city in Coos County, with a population of 15,337.
Powers is the smallest city in Coos County.
There are 11 cities in Coos County, Oregon.