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Summit County, CO
9 cities and towns and 4 ZIP codes in Summit County, Colorado.
Population
31,017
Land area
608sq mi
People per sq mi
51
ZIP codes
4
Cities and towns in Summit County
Summit County at a glance
- Households here earn a median of $109,773 a year, 15% more than the Colorado figure of $95,470.
- A typical owner-occupied home is valued at $939,900 (74% above Colorado) and median rent is $1,928 a month.
- The biggest population centers are Breckenridge (4,959), Silverthorne (4,815) and Frisco (2,825).
Local data for Summit County, CO
Counts from official public data
Housing and community stats
Summit County, CO, American Community Survey 2020-2024
Median household income
$109,773
Poverty rate
7.7%
Median home value
$939,900
Prices +1.8% in a year
Median rent
$1,928/mo
Homeownership
72.1%
Bachelor's or higher
55.0%
Median age
39.5
Average commute
20.8 min
Largest reported origins and ancestries: German Americans (4,498), Mexican Americans (2,920), Irish Americans (2,400).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
4.0%
Aug 2026, +1.1 pts in a year
Average annual pay
$59,922
22,480 jobs, 2025
Income per person
$112,809
BEA, 2024
Federal spending
$183M
FY 2026, $5,886 per person
PPP loans
$145M
1,929 loans, 18,198 jobs reported
Campaign donations
$373K
Itemized, 2026 cycle
How people get to work
Summit County, CO, workers 16 and older. American Community Survey 5-year estimates
- Drove alone55.2%
- Carpooled9.5%
- Public transit4.0%
- Walked6.0%
- Bicycle1.3%
- Taxi, ride-hailing, motorcycle or other0.2%
- Worked from home23.7%
Average one-way commute: 20.8 minutes for people who do not work from home.
Environment and hazard risk
Summit County, CO, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: avalanche
Storm events since 1996
554
Most often winter weather
Flood insurance policies
145
0.9% of homes, county
July high / Jan low
75° / 2°F
14.9 inches of rain a year
Hazards, floods and storm historyCheck a flood zone4 historic places
Health statistics
Share of adults in Summit County, CO, CDC PLACES estimates
Obesity
24.4%
U.S. 33.3% -8.9 pts
Diabetes
7.9%
U.S. 12.1% -4.2 pts
Smoking
10.5%
U.S. 12.8% -2.3 pts
Uninsured (18-64)
9.1%
U.S. 11.1% -2.0 pts
Cities, towns and ZIP codes in Summit County
Population shown
Frequently asked questions
- What is the largest city in Summit County, CO?
- Breckenridge is the largest city or town in Summit County, with about 4,959 residents.
- How many ZIP codes are in Summit County?
- Summit County includes 4 ZIP Code Tabulation Areas, including 80424, 80435, 80443, 80498.
- What is the population of Summit County, CO?
- About 31,017 people live in Summit County, based on American Community Survey 5-year estimates.
- What counties border Summit County?
- Summit County borders Eagle County, Park County, Grand County, Clear Creek County, Lake County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023