9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 80487 | Steamboat Springs | 18,378 |
| 81639 | Hayden | 2,617 |
| 80467 | Oak Creek | 2,411 |
| 80428 | Clark | 635 |
| 80469 | Phippsburg | 407 |
| 80483 | Yampa | 404 |
| 80463 | McCoy | 105 |
| 80479 | Toponas | 21 |
| 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).