9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 80487 | Steamboat Springs | 18,383 |
| 81639 | Hayden | 2,560 |
| 80467 | Oak Creek | 2,512 |
| 80428 | Clark | 512 |
| 80483 | Yampa | 504 |
| 80469 | Phippsburg | 356 |
| 80463 | McCoy | 92 |
| 80479 | Toponas | 12 |
| 81653 | Slater | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Routt County, Colorado (US Census).