9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 80487 | Steamboat Springs | 18,525 |
| 81639 | Hayden | 2,618 |
| 80467 | Oak Creek | 2,260 |
| 80428 | Clark | 720 |
| 80483 | Yampa | 455 |
| 80469 | Phippsburg | 402 |
| 80463 | McCoy | 100 |
| 80479 | Toponas | 32 |
| 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).