Summit County, CO demographics:
population, income, and more

Total population
31,017
0.5% year-over-year change
Median household income
$109,773/yr
3.3% year-over-year change
Housing units
32,251
1.3% year-over-year change

Summit County population

How many people live in Summit County

Summit County is home to 31,017 residents, according to the most recent Census data. Gender-wise, 55.3% of Summit County locals are male, and 44.7% are female.

Total population
31,017
0.5% year-over-year change
Gender ratio
Male
55.3%
17,144
Female
44.7%
13,873
Value Percent YoY change
Male 17,144 55.3% 1.5%
Female 13,873 44.7% -0.6%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Summit County is 40, with the population distributed as follows: about 13.5% are children under 15, then 8.9% are in the 15 to 24 age group. Adults between 25 and 44 make up 35.4% of the population, while another 26.5% fall into the 45 to 64 bracket. Finally, around 15.7% are 65 or older.

Median age
39.5
Age breakdown
Under 15
13.5%
15 to 24
8.9%
25 to 44
35.4%
45 to 64
26.5%
Over 65
15.7%
Value Percent YoY change
Under 15 4,190 13.5% -0.1%
15 to 24 2,768 8.9% 4.8%
25 to 44 10,964 35.4% 0.0%
45 to 64 8,221 26.5% -1.2%
Over 65 4,874 15.7% 2.9%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Summit County, 89.1% of the population are US-born citizens, while 4.6% have gained naturalized citizenship. At the same time, 6.4% of residents are non-citizens. As for race, 76.5% of locals are Caucasian, 0.4% are African American and 1.6% have Asian roots. Another 0.4% are Indigenous American, 0.4% are Pacific Islanders, while 1.3% identify as another race. There’s also a share of 19.5% that includes residents with two or more races.

Citizenship
U.S.-born citizens
89.1%
Non-U.S.-born citizens
4.6%
Non-citizens
6.4%
Value Percent YoY change
U.S.-born citizens 27,623 89.1% 0.9%
Non-U.S.-born citizens 1,411 4.6% -0.8%
Non-citizens 1,983 6.4% -3.1%
Racial breakdown
White
76.5%
Black or African American
0.4%
American Indian and Alaska Native
0.4%
Asian
1.6%
Native Hawaiian and other Pacific Islander
0.4%
Two or more races
19.5%
Other
1.3%
Value Percent
White 23,723 76.5%
Black or African American 129 0.4%
American Indian and Alaska Native 112 0.4%
Asian 486 1.6%
Native Hawaiian and other Pacific Islander 122 0.4%
Two or more races 6,038 19.5%
Other 407 1.3%

Households in Summit County

A peek inside Summit County households

Summit County has 12,545 households, with an average of 2 members in each. Of these, 53% are families, while the remaining 47% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
12,545
1.6% year-over-year change
Average people per household
2
Non-family households
5,893
Family households
6,652
Value Percent YoY change
Non-family households 5,893 47% 5.1%
Family households 6,652 53% -1.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Summit County

The housing landscape of Summit County

Summit County's housing consists of 32,251 units, with 34.6% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 15.8% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 1.4% of the housing landscape.

Housing units
32,251
1.3% year-over-year change
Housing types
Value Percent
1 unit, detached 11,158 34.6%
1 unit, attached 5,109 15.8%
2 units 651 2%
3 or 4 units 1,169 3.6%
5 to 9 units 1,891 5.9%
10 to 19 units 2,955 9.2%
20 to 49 units 4,591 14.2%
50 or more units 4,283 13.3%
Mobile home 434 1.4%
Boat, RV, van, etc. 10 0%
Homes built since 2020
499
45.5% year-over-year change

The age of buildings in Summit County

In Summit County, the median construction year is 1989. Most development happened in the second half of the 20th century. Then, 16.2% of homes were added from 2000 to 2009, 6% between 2010 and 2019, and 1.6% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 452 1.4% 36.6%
Built between 1940 and 1949 6 0% 100.0%
Built between 1950 and 1959 355 1.1% -0.8%
Built between 1960 and 1969 1,105 3.4% -8.1%
Built between 1970 and 1979 8,222 25.5% -3.5%
Built between 1980 and 1989 6,767 21% 6.5%
Built between 1990 and 1999 7,706 23.9% -1.5%
Built between 2000 and 2009 5,211 16.2% 2.4%
Built between 2010 and 2019 1,928 6% 5.7%
Built in 2020 or later 499 1.6% 45.5%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Summit County occupancy rates

Out of the 12,545 occupied housing units in Summit County, 72.1% are owner-occupied, while 27.9% are lived in by tenants. Meanwhile, 61.1% of all homes on the local market sit vacant.

Occupied housing units
12,545
1.6% year-over-year change
Occupancy breakdown
Renter occupied
3,505
Owner occupied
9,040
Value Percent YoY
change
Renter occupied 3,505 27.9% -7.8%
Owner occupied 9,040 72.1% 5.8%
Unoccupied housing units
61.1%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Summit County housing costs

Housing costs in Summit County come to a median of $1,981 per month, while tenants specifically pay a median gross rent of $1,928.

Median housing costs per month
$1,981/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Summit County
$1,928/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Summit County

Summit County education at a glance

About 19.6% of the population in Summit County went to high school, while 20.6% pursued college studies. Another 6.2% earned an associate degree and 32% hold a bachelor’s. Meanwhile, 19.7% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 468 1.8% -29.4%
High school diploma 5,093 19.6% -6.5%
College diploma 5,363 20.6% -3.8%
Associate degree 1,606 6.2% 18.4%
Bachelor's degree 8,315 32% 4.6%
Graduate degree 5,126 19.7% 6.8%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Summit County

How much people earn in Summit County

The average annual household income in Summit County was $147,734 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +6.6% change from the previous year. At the same time, the median income stood at $109,773, reflecting a +3.3% shift over the same period.

Average household income in Summit County
$147,734/year
6.6% year-over-year change
Median household income in Summit County
$109,773/year
3.3% year-over-year change

Summit County income by age

In Summit County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $109,696. Those with someone between 45 and 64 in charge, often well established professionally, earn $126,573 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $50,659, while those led by someone over 65, many of whom may be retired, have about $105,707 in earnings. Overall, 92.3% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $50,659 -0.3%
25 - 44 $109,696 7.1%
45 - 64 $126,573 3.5%
Over 65 $105,707 12.0%
Above poverty level
28,332
Below poverty level
2,373
Value Percent YoY
change
Above poverty level 28,332 92.3% 0.5%
Below poverty level 2,373 7.7% 4.2%

Employment in Summit County

Workforce and job types in Summit County

The job market in Summit County is powered by 19,172 working residents, spread across a range of industries and roles. 83.1% of the working population are employed in professional or administrative positions, while 16.9% are in hands-on or service-based jobs. Also, 10.7% run their own businesses, 72.4% are employed by private companies, and 12.1% work in the public sector.

Workforce demographics

Working population
19,172
0.1% year-over-year change
White collar
15,936
Blue collar
3,236
Value Percent YoY change
White collar 15,936 83.1% 3.9%
Blue collar 3,236 16.9% -15.5%
Employer type
Self employees
10.7%
Private companies
72.4%
Governmental workers
12.1%
Not for profit companies
4.8%
Value Percent YoY change
Self employees 2,053 10.7% 3.4%
Private companies 13,886 72.4% 0.2%
Governmental workers 2,320 12.1% -6.1%
Not for profit companies 913 4.8% 7.4%
Unemployment rate
5.0%
51.6% year-over-year change

Available workforce

The unemployment rate in Summit County stands at 5%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Summit County

How people get around in Summit County

In Summit County, the average commute time is 21 minutes. Commuting methods vary: 64.7% of residents travel by personal vehicle and 6% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
21 min
-1.9% year-over-year change
Means of transportation
Value Percent YoY change
Car 12,201 64.7% -5.4%
Bus or trolleybus 763 4% -9.6%
Motorcycle 10 0% N/A
Bicycle 250 1.3% -6.7%
Walk 1,136 6% 82.9%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Summit County by zipcode?

Zipcode Population Number of households Median income Average income
80424 9,764 3,991 $120,907 $150,412
80435 8,715 3,285 $97,463 $133,947
80443 3,992 1,744 $108,710 $169,321
80498 8,881 3,639 $105,897 $145,317

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FAQs about Summit County demographics 

What is the total population of Summit County?

Summit County has a total population of 31,017 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.5% compared to a year ago.

What is the gender ratio in Summit County?

The gender ratio in Summit County is as follows:
  • 55.3% males (17,144 residents)
  • 44.7% females (13,873 residents)

What is the median age in Summit County?

The median age in Summit County is 39.5.

What is the age distribution of the population in Summit County?

The age distribution in Summit County is as follows:
  • Under 15: 13.5% (4,190 residents)
  • Ages 15-24: 8.9% (2,768 residents)
  • Ages 25-44: 35.4% (10,964 residents)
  • Ages 45-64: 26.5% (8,221 residents)
  • Over 65: 15.7% (4,874 residents)

What is the racial and ethnic makeup of Summit County?

The racial and ethnic makeup of Summit County is as follows:
  • White: 76.5% (23,723 residents)
  • Black or African American: 0.4% (129 residents)
  • American Indian and Alaska Native: 0.4% (112 residents)
  • Asian: 1.6% (486 residents)
  • Native Hawaiian and Other Pacific Islander: 0.4% (122 residents)
  • Two or More Races: 19.5% (6,038 residents)
  • Other: 1.3% (407 residents)

What percentage of the population in Summit County are U.S.-born citizens?

U.S.-born citizens represent 89.1% of the population in Summit County.

How many housing units are there in Summit County?

There are 32,251 housing units in Summit County, reflecting a +1.3% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Summit County and what is the average household size?

Summit County has a total of 12,545 households, with an average of 2 people in each.

What is the median household income in Summit County?

Summit County has a median household income of $109,773, representing a +3.3% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Summit County?

The employment rate is 95% in Summit County, with a workforce of 19,172 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 83.1% (15,936 residents)
  • Blue-collar workers: 16.9% (3,236 residents)

Places of employment:
  • Self-employed: 10.7% (2,053 residents)
  • Private companies: 72.4% (13,886 residents)
  • Governmental workers: 12.1% (2,320 residents)
  • Not-for-profit companies: 4.8% (913 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025