Boulder, Colorado Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Boulder, Colorado is 106,274 as of the 2023 American Community Survey, making it the 12th-largest city in Colorado. The median household income is $85,364, the median home value is $982,600, and the median age is 28.8.
The population has grown 9.3% since 2010 (97,752 → 106,803).
106,274
Population
3954
People / sq mi
$85,364
Median Income
$982,600
Median Home Value
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Boulder covers 26.9 sq mi of land at 3954 people per square mile.
About Boulder, CO
Educational attainment is the headline number in Boulder: 76.8% of adults 25 and older have a four-year degree. Boulder is a city in Colorado with a population of 106,274. It ranks #12 among cities in Colorado by population.
The typical household here earns about $85,364, above the US median of $78,538. About 5.9% of residents live below the federal poverty level, below the national 12.4%. Real estate commands a premium here — a median home value of $982,600, with typical rent around $1,924.
Boulder is among the best-educated US cities: 76.8% of adults 25 and older hold a bachelor’s degree, above the national 35.0%. Working from home is common here: 31.6% of workers do so, above the national 14.0%, and the average commute runs about 19 minutes each way.
The education numbers are the throughline: a college-heavy population in Boulder usually coincides with higher incomes and a workforce concentrated in professional and information industries.
Boulder city Population History (2010-2024)
The city of Boulder city had a population of 97,752 in 2010 and 106,803 in 2024, a 9.3% growth over 14 years. The peak was 108,418 in 2020. Average annual growth rate: 0.65%.
106,803
Population (2024)
97,752
Population (2010)
108,418
Peak (2020)
0.65%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 97,752 |
| 2011 | 100,137 |
| 2012 | 101,160 |
| 2013 | 102,719 |
| 2014 | 104,451 |
| 2015 | 106,742 |
| 2016 | 107,128 |
| 2017 | 106,447 |
| 2018 | 106,008 |
| 2019 | 105,673 |
| 2020 | 108,418 |
| 2021 | 104,316 |
| 2022 | 106,079 |
| 2023 | 106,634 |
| 2024 | 106,803 |
Race & Ethnicity
| White | 81.8% |
| Black or African American | 1.1% |
| Asian | 0.1% |
| Hispanic or Latino (any race) | 1.2% |
| Two or More Races | 0.0% |
Economy & Income
$85,364
Median Household Income
$59,450
Per Capita Income
5.9%
Poverty Rate
3.9%
Unemployment Rate
Housing
$982,600
Median Home Value
$1,924
Median Rent
47.9%
Owner-Occupied
Education
96.9%
High School+
76.8%
Bachelor's+
Commute
5.9%
Drive Alone
41.9%
Public Transit
31.6%
Work From Home
19.0 min
Avg Commute
Community Profile
59.0%
Foreign Born
85.1%
Non-English at Home
2.8%
Veterans
7.5%
With Disability
96.5%
Health Insurance
98.5%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 27.3% |
| Finance, Insurance & Real Estate | 20.1% |
| Education, Health Care & Social Services | 14.4% |
| Manufacturing | 6.4% |
| Information | 5.0% |
| Arts, Entertainment & Food Services | 3.9% |
| Transportation & Warehousing | 3.5% |
| Construction | 2.8% |
| Retail Trade | 2.7% |
| Public Administration | 2.6% |
| Agriculture & Mining | 0.8% |
Largest cities in Colorado
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Metro areas in Colorado
City rankings
Frequently Asked Questions
Boulder, Colorado has a population of 106,274 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 12th-largest city in Colorado.
The median household income in Boulder, Colorado is $85,364, with 5.9% of residents living below the federal poverty level.
The median home value in Boulder, Colorado is $982,600, with median monthly rent at $1,924 and a homeownership rate of 47.9%.
The median age in Boulder, Colorado is 28.8 years. The population is 51.8% male and 48.2% female.
The population has grown 9.3% since 2010 (97,752 → 106,803).
Boulder city, CO Climate
Boulder city, CO has an average annual temperature of 9.2°C (49°F) and receives about 465 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.2°C
Avg Temp
465
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -1° / 30° | 16 mm |
| February | 0° / 33° | 18 mm |
| March | 4° / 38° | 42 mm |
| April | 7° / 45° | 59 mm |
| May | 13° / 55° | 69 mm |
| June | 18° / 64° | 49 mm |
| July | 21° / 70° | 49 mm |
| August | 20° / 69° | 42 mm |
| September | 16° / 60° | 40 mm |
| October | 10° / 49° | 31 mm |
| November | 3° / 37° | 31 mm |
| December | 0° / 32° | 19 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Boulder city, CO
The most comfortable months to visit Boulder city, CO are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -9°C low). May is usually the wettest month.
Where to stay near Boulder
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Statewide data for Colorado
Population, race, income, age, and trends across Colorado
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.