ZIP Codes of Routt County, CO

Population & People
Population & People
Total Population
25,012
Household Income
Household Income
Median Income
$102,481
Housing
Housing
Total Housing Units
17,054
Business & Economy
Business & Economy
Total Businesses
1,853
Employment
Employment
Employment Rate
68.63%
Education
Education
Bachelor's Degree+
54.35%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 9 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:9 ZIP Codes (4 Standard, 5 PO Box, 0 Unique) [See All]
Area Code:970
Timezone:Mountain (GMT -07:00)
Local Time:11:52:52 PM
Population:25,012 [See All]
FIPS:08107
CBSA:Steamboat Springs, CO
Land Area:2,112 sq mi
Water Area:6 sq mi
Coordinates:40.4031, -106.9333
Quick Link:
https://www.zip-codes.com/county/co-routt.asp
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Striking education divide
Bachelor's share spans 27.4% to 59.5% — a 32-point gap.

Standout ZIPs in this County


Most Populous
Steamboat Springs · 18,525 people
74.1% of county total
Highest Income
Clark · $120,227 median
1.2× county average
Largest Land Area
Steamboat Springs · 868.8 sq mi
Spans the most ground
Fastest Growth
Hayden · 14.4% (10-yr)
2,289 → 2,618 residents
Most Educated
Steamboat Springs · 59.5% bachelor's+
8,282 of 13,915 adults 25+

Things worth knowing about Routt County


25,012 residents live across 9 ZIPs covering 2,112 sq mi, served by 7 distinct USPS-recognized cities.

Population moved from 22,812 to 25,012 from 2014 to 2024 — a +9.6% change. 6 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 80428 (Clark, $120,227 median) and poorest ZIP 80483 (Yampa, $85,089) are 49.6 miles apart — a 1.4× income gap across local geography.

Median home values vary 2.5× across this county — from $429,500 in 80483 (Yampa) to $1,055,900 in 80487 (Steamboat Springs).

Density varies across the county — from 3 people/sq mi in 80428 (Clark) to 21 in 80487 (Steamboat Springs).

Educational attainment ranges from 27.4% bachelor's+ in 81639 (Hayden) to 59.5% in 80487 (Steamboat Springs) — the breadth of educational profiles across the area.

Within Colorado, this is the #23 most populous of 65 counties and ranks #9 for median household income with the #27 fastest decade growth .

Weighted by population, the typical household earns about $108,555 across the county — reflecting what a typical resident sees, not a simple ZIP average.

54.4% of adults age 25+ hold a bachelor's degree or higher (10,310 of 18,968 reporting).

4 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Routt County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
2,112
square miles
Avg density
11.8
people per sq mi
Population
25,012
across 9 ZIPs
Steamboat Springs
868.8 sq mi
18,525 residents
Hayden
431.1 sq mi
2,618 residents
Oak Creek
270.9 sq mi
2,260 residents

Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Steamboat Springs

All ZIP Codes in Routt County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
80487Steamboat SpringsStandard18,525$109,659868.89.3%
81639HaydenStandard2,618$110,404431.114.4%
80467Oak CreekStandard2,260$102,143270.94.0%
80428ClarkStandard720$120,227267.417.5%
80483YampaPO Box455$85,08991.6-8.3%
80469PhippsburgPO Box402$87,36626.448.3%
80479ToponasPO Box32156.323.1%
80488Steamboat SpringsPO Box0.0
80477Steamboat SpringsPO Box0.0

Adjacent & Nearby Counties