Summit County, Colorado
Located in Colorado, Summit County has a population of 31,017 residents and a median age of 39.5 years, making it the #1,448 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 7.7%. The median home value is $939,900, and the median household income is $109,773, which is 46% above the national median.
Demographics
Summit County has a population of 31,017, making it the #1,448 most populous county in the US. The median age is 39.5 years, which is 1.5% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Summit County is $109,773, ranking #105 out of 3,222 counties — 46.1% above the national median. The poverty rate is 7.7% and unemployment stands at 5.0%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Summit County is $939,900 (+233.4% vs national). Renters pay a median of $1,928/mo and the homeownership rate is 72.1%.
Median Home Value Trend
Rankings →Household Type
Education
In Summit County, 55.0% of adults age 25+ hold a bachelor's degree or higher, which is 63.2% above the national average, ranking #55 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Summit County is 92.4 years. 12.8% of adults report poor or fair health and 10.4% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
11.9% of adults in Summit County smoke , 22.7% are obese , and 25.0% report excessive drinking. The drug overdose death rate is 18.4 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 14.8 per 100,000. Motor vehicle deaths occur at a rate of 5.1 per 100,000.
Suicide Rate Trend
Families & Children
7.2% of children in Summit County live in poverty . The teen birth rate is 12.3 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Summit County is 77.5%. The mean commute time is 22.5 min, which is 18.5% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Summit County voted Democratic with a margin of 37.2%. The vote was 67.1% Dem / 29.9% Rep. Compared to 2020, the margin shifted 2.4 toward Republicans .
Vote Share Over Time
About Summit County, Colorado
Summit County, Colorado has a total population of 31,017, making it the 1,448th most populous county in the United States. The median age in Summit County is 39.5 years, which is 1.5% above the national median of 38.9 years.
The median household income in Summit County is $109,773, which ranks #105 of 3,222 counties nationwide. This is 46.1% above the national median of $75,149. The poverty rate is 7.7%, lower than the national rate of 12.6%. The unemployment rate stands at 5.0%.
The median home value in Summit County is $939,900, 233.4% above the national median. Renters in Summit County pay a median gross rent of $1,928 per month. The homeownership rate is 72.1%, compared to the national rate of 64.4%.
In Summit County, 55.0% of residents aged 25 and older hold a bachelor's degree or higher, 63.2% above the national average of 33.7%. Health insurance coverage stands at 89.8% of the population. The average commute time for workers is 22.5 min.
Summit County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 74.5% of the population, followed by Hispanic or Latino (17.2%) and Two or More Races (5.7%).
All data for Summit County, Colorado comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.