Routt County, Colorado
County seat: Steamboat Springs · Population 25,329 (2025) · 2,362 sq mi
Routt County is the 23rd most populous of Colorado's 64 counties, with 25,329 people (2025 estimate). Its county seat is Steamboat Springs. It is part of the Region 12: Northern Mountains region, one of the 14 Planning and Management Regions of Colorado. The map shows its 4 cities and towns and the 7 neighboring counties.
Routt County facts
- County seat
- Steamboat Springs
- Population (2025 estimate)
- 25,329 +2% since 2020
- Land area
- 2,362 sq mi 15th largest of 64
- Water area
- 6 sq mi
- Population density
- 11 per sq mi
- Established
- 1877
- Named after
- John Long Routt American politician (1826-1907)
- Largest city
- Steamboat Springs 13,557
- Median household income
- $106,489
- Cities and towns
- 4 plus 1 CDPs
- ZIP codes
- 11
- Time zone
- Mountain
- FIPS code
- 08107
Cities and towns in Routt County
Routt County has 4 incorporated cities, towns and villages. Populations count the people living inside Routt County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Steamboat Springs (county seat) | City | 13,557 | |
| Hayden | Town | 2,250 | |
| Oak Creek | Town | 834 | |
| Yampa | Town | 373 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Phippsburg | 390 |
ZIP codes in Routt County
11 ZIP codes reach into Routt County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 80428
- 80463 also Eagle County
- 80467 also Rio Blanco County
- 80469
- 80479
- 80483
- 80487
- 81625 also Moffat County
- 81638 also Moffat County
- 81639
- 81653 also Moffat County
Population of Routt County, 2020–2025
Routt County grew by 500 people (+2%) between April 2020 and July 2025: 370 more births than deaths and a net gain of 113 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 24,837 |
| 2021 | 25,073 |
| 2022 | 25,173 |
| 2023 | 25,290 |
| 2024 | 25,471 |
| 2025 | 25,329 |
Neighboring counties
- Jackson County east · 1,211 people
- Moffat County west · 13,122 people
- Grand County southeast · 16,496 people
- Rio Blanco County southwest · 6,683 people
- Carbon County, Wyoming north · 14,013 people
- Eagle County south · 54,291 people
- Garfield County southwest · 63,474 people
Printable Routt County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (88 KB)
- PNG (2400 px) (81 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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