5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Steamboat Springs | 1 | 13,700 | 13,219 | 0.71% | 1,385 | 9.89 | City |
| Hayden | 2 | 1,911 | 1,931 | -0.21% | 586 | 3.26 | Town |
| Oak Creek | 3 | 838 | 888 | -1.18% | 2,271 | 0.37 | Town |
| Phippsburg | 4 | 431 | 207 | 7.21% | 363 | 1.19 | CDP |
| Yampa | 5 | 390 | 399 | -0.51% | 1,585 | 0.25 | Town |
Steamboat Springs is the largest city in Routt County, with a population of 13,700.
Yampa is the smallest city in Routt County.
There are 5 cities in Routt County, Colorado.