Summit County, Colorado Demographics 2026

Name: Summit County, Colorado Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Summit County, Colorado has a population of 31,017, the 19th most populous county in Colorado. The median household income is $109,773 and the median home value is $939,900. The poverty rate is 7.7%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Summit County Quick Facts

Population 31,017

Median Household Income $109,773

Median Home Value $939,900

Poverty Rate 7.7%

Unemployment Rate 5.0%

Median Age 39.5 years

Homeownership Rate 72.1%

Affordability Ratio 8.6x

Bachelor's Degree+ 55.0%

High School Graduation 95.9%

Cities/Places 9

Population 31,017 19th of 64

Median Income $109,773 15% higher than state

Poverty Rate 7.7%

Unemployment 5.0%

How Summit County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	30,857	31,017	+0.5%
Median household income	$106,255	$109,773	+3.3%
Median home value	$850,700	$939,900	+10.5%

Median Household Income

Summit

$109,773

$95,470

National

$80,734

Median Home Value

Summit

$939,900

$539,400

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 6.2%

$25K-$50K 11.7%

$50K-$100K 28.1%

$100K+ 54.0%

Detailed income brackets

Under $10K

1.7%

$10K-$15K

1.1%

$15K-$20K

2.1%

$20K-$25K

1.3%

$25K-$30K

1.6%

$30K-$35K

3.0%

$35K-$40K

2.5%

$40K-$45K

3.8%

$45K-$50K

0.9%

$50K-$60K

8.2%

$60K-$75K

8.1%

$75K-$100K

11.7%

$100K-$125K

8.6%

$125K-$150K

8.9%

$150K-$200K

12.1%

$200K+

24.4%

Employment

5.0% Unemployment Rate State: 4.6%|National: 5.2%

75.8% Labor Force Participation

Housing Overview

Owner 72.1%

Renter 27.9%

Affordability Index Very Expensive

8.6x home value to income ratio

Median gross rent $1,928/mo 21.1% of median household income annually

People & Demographics

Age Distribution

Under 18

16.3%

18-34

25.2%

35-54

29.8%

55-74

24.2%

75+

4.4%

Race & Ethnicity

Diversity Index

Moderate Diversity

Moderate diversity with one or two groups making up the majority.

State average: 52 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Summit County

City	Population	Median Income	Poverty	Home Value
Breckenridge	4,959	$138,191	8.3%	$1,012,700
Silverthorne	4,815	$125,478	12.2%	$700,800
Frisco	2,825	$113,506	1.3%	$891,400
Blue River	1,410	$134,250	7.6%	$1,267,300
Keystone	1,216	$51,591	26.3%	$1,284,700
Dillon	832	$111,250	4.1%	$1,090,000
Copper Mountain	353	N/A	7.1%	N/A
Montezuma	120	$130,357	1.7%	$854,200
Heeney	63	N/A	9.5%	$789,500

Explore Colorado Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Summit County is located in Colorado with a total population of 31,017. It is the 19th most populous county out of 64 in Colorado. The county encompasses 9 Census-designated places.

Age Demographics

The median age in Summit County is 39.5 years. This is 5% higher than the state median of 37.7 years.

Economy, Income & Housing

The median household income in Summit County is $109,773. This is 15% higher than the state median of $95,470. It is also 36% higher than the national median of $80,734. The poverty rate stands at 7.7%. This is 19% lower than the state poverty rate of 9.4%. The unemployment rate is 5.0%. This is 7% higher than the state rate of 4.6%. The median home value is $939,900. Housing costs are 74% higher than the state median of $539,400. The home-value-to-income ratio of 8.6x suggests that housing affordability is a significant concern for many residents. 72.1% of occupied housing units are owner-occupied. This homeownership rate is 9% higher than the state average of 66.2%.

Race & Ethnicity

The largest racial or ethnic group in Summit County is White (non-Hispanic), making up 74.5% of the population. Hispanic or Latino residents account for 17.2%. The Black or African American population (0.4%) is well below the state average of 3.8%. The Asian population (1.5%) is well below the state average of 3.2%.

Education

55.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 20% higher than the state rate of 45.7%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.9%. Notably, 21.1% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All figures for Summit County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Colorado and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Summit County, Colorado?

Summit County has a population of 31,017, making it the 19th most populous county in Colorado.

What is the median income in Summit County?

The median household income in Summit County is $109,773 with a poverty rate of 7.7%.

How many cities are in Summit County, Colorado?

Summit County contains 9 Census-designated places.