Demographic Data

The city of Boulder has approximately 103,650 residents.  Population in the city has grown by an estimated 0.5% yearly since 2000 and is expected to grow to 118,500 by 2030.  University of Colorado students represent approximately 20% of the city’s population.  The presence of the university has a significant effect on the city’s demographics.  On average, Boulder residents are younger, and are more likely to have a college degree, work in professional or managerial occupations, and have higher incomes than residents of many other communities.

For more information including detailed tables, download: Demographic Profile of Boulder, Colorado (PDF 169KB). 

Here’s a quick snapshot of select demographic data for the City of Boulder and Boulder County, along with national data for comparison.

Demographic Snapshot
Population Characteristics City of Boulder Boulder CountyUS Total
Total Population 103,650 293,161 304,059,724
Number of Households 47,114 123,177 116,053,330
Average Household Size 2.20 2.38 2.62
Average Family Size 2.92 3.02 3.22
% Family Households 42% 57% 66%
% Households w/children <18 20% 29% 34%
Median age 28.7 years 36.3 years 36.9 years
Population 18 or older 85% 79% 76%
Population 65 or older 8% 9% 13%
Education (residents 25 or older):      
High school graduate + 94% 93% 85%
Bachelor’s degree + 69% 57% 28%
Advanced degree 33% 24% 10%
Population in civilian labor force (16 or older) 66% 71% 65%
Occupations of civilian labor force:      
Managerial, professional, related 54% 51% 35%
Sales and office 19% 21% 26%
Service 18% 15% 17%
Construction, maintenance, repair 4% 6% 9%
Production, transportation, related 5% 7% 13%
Farming, fishing, forestry * * 1%
Mean travel time to work 18.9 minutes 21.3 minutes 25.5 minutes
Drive alone to work 54% 51% 35%
Work in place of residence 73% 43% 31% 
Work in county of residence 85% 79% 73% 
Median income – household $57,231 $66,463 $52,029
Median income – family $94,890 $89,164 $63,366
Per capita income $39,659 $38,652 $27,589
Total housing units 44,970 124,087 129,065,264
Single family homes 42% 61% 62%
Built 2000 or later 6% 13% 12%
Owner-occupied housing 49% 65% 67%
Renter-occupied housing 51% 35% 33%
Vacant housing units 4% 5% 12%
Median value – owner occupied $530,100 $358,600 $197,600
Average monthly rent $976 $971 $824

Sources: US Census Bureau, 2008 American Community Survey, Population Estimates Program; City of Boulder, 2009 Community Data Report (* Less than 0.5%)