Cost of Living in Boulder, Colorado
Boulder's cost of living runs above the Colorado and national averages, driven mostly by housing. Here's what actually costs more, and by how much, sourced and dated.
New to Boulder › Cost of Living
Boulder cost-of-living quick facts
- Typical home value
- $972,493 (June 2026)
- Median asking rent
- $2,439 a month (June 2026)
- Property tax rate
- set per tax district, so look yours up by address with the Boulder County Assessor
- Sales tax rate
- 9.195% combined (July 2026)
- Colorado state income tax rate
- 4.4% flat (tax year 2025, the most recent published rate)
- Cost-of-living index vs. national average
- no single index number we can stand behind, because the one built for city comparisons costs money and the free federal one covers metro Denver rather than Boulder
Housing costs in Boulder
Housing is the single biggest reason Boulder costs more than most of Colorado. The typical Boulder home was worth $972,493 in June 2026, and asking rents ran about $2,439 a month. For scale, the typical home in Longmont, half an hour north, was $557,628 over the same month. That gap is most of why people who start out searching Boulder often end up buying somewhere else in the county.
Boulder's housing market is shaped by the University of Colorado Boulder, open-space growth boundaries that limit new construction, and steady demand from people moving here for the outdoor access and the tech and research economy. Supply is capped on purpose, and that is the durable part of the price story.
Boulder vs. Denver cost of living
People relocating to the Front Range often compare Boulder to Denver directly, and the short answer is that Boulder costs more, mostly through housing. We have not published a percentage for the gap, because a number worth trusting means comparing the same measure on the same month for both cities, and that comparison is not done yet. When you see one quoted elsewhere, check what it is measuring and when.
Utilities and taxes
Colorado charges a flat state income tax of 4.4% flat (tax year 2025, the most recent published rate). It moves year to year under the state's refund mechanism: it was 4.25% for 2024 and 4.4% for 2025, and the 2026 rate is not published yet.
Sales tax in the city of Boulder is 9.195% combined, made up of the City of Boulder's 3.86%, the State of Colorado's 2.90%, Boulder County's 1.335%, and RTD's 1.10%. Prepared food is taxed higher, at 9.345%.
Property tax is the one number we will not print as a single citywide figure, because it genuinely isn't one. Colorado property tax is your home's actual value times an assessment rate times your mill levy, and the mill levy is set per tax district, so two houses a mile apart can owe meaningfully different amounts. Look the address up with the Boulder County Assessor, whose property search shows the levy that actually applies to it. Utilities (electric, gas, water, internet) are not costed out here yet, so ask the seller or landlord for a year of actual bills instead of working from an average.
Groceries and everyday costs
Day-to-day costs like groceries, dining, and childcare in Boulder typically run above the national average, in line with the broader cost-of-living gap. We have not broken that down by category with real figures yet, so take the direction as reliable and the size of it as something to test against your own grocery run.
Related guides
- Moving to Boulder: the master guide
- Homes for sale in Boulder: what homes cost and what buying involves.
- Boulder real estate market: segments, trends, and the rental side.
- Living in Boulder: what day-to-day life is actually like.
- Boulder neighborhoods: where costs vary most.
- Is Boulder a good place to live?
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Cost of living FAQ
Is Boulder expensive to live in?
Yes, and housing is most of the reason. The typical Boulder home was worth $972,493 in June 2026 (Zillow Home Value Index), against $557,628 in Longmont over the same month. You will see sites quote a single "Boulder is X% above average" index. We don't, because the index built for city-to-city comparison is a paid product, and the free federal one measures metro Denver rather than Boulder. Neither one can honestly be reduced to a number for this city.
What is the median home price in Boulder, Colorado?
Two different numbers get called this. The Zillow Home Value Index, which estimates what a typical Boulder home is worth, was $972,493 in June 2026. The median price homes actually sold for was $883,333 in May 2026. The sale figure is lower because of which homes happened to trade that month, not because values fell that far.
How does Boulder's cost of living compare to Denver?
Housing costs more in Boulder than in Denver, and that is the bulk of the difference you will feel. We have not put a percentage on the gap, because doing it honestly means comparing the same measure on the same date for both cities, and we have not published that comparison yet. Anyone quoting you one clean number for it is rounding off a lot.
What is the property tax rate in Boulder, Colorado?
There isn't a single citywide rate. Colorado property tax is your home's actual value times an assessment rate times your mill levy, and the mill levy is set per tax district, so two homes a mile apart can owe different amounts. Look the address up with the Boulder County Assessor, whose property search shows the levy that actually applies to it.
Does Colorado have a state income tax?
Yes, a flat one. It was 4.4% flat for tax year 2025, the most recent published rate, per the Colorado Department of Revenue. The rate moves year to year under the state's refund mechanism: 4.25% for 2024, 4.4% for 2025, with the 2026 rate not yet published.
What is the sales tax rate in Boulder?
9.195% combined, as of July 2026, per the City of Boulder. That breaks down as City of Boulder 3.86%, State of Colorado 2.90%, Boulder County 1.335%, and RTD 1.10%. Prepared food is taxed higher, at 9.345%.
Sources
Figures on this page were pulled directly from these sources on 2026-07-28:
- Zillow Research data: typical home value, asking rent, median sale price (Boulder city)
- City of Boulder, Tax Rates & Types: combined sales tax
- Colorado Department of Revenue, Individual Income Tax Guide: state income tax rate by year
Still unverified, and deliberately left as placeholders rather than filled with an estimate:
- Property tax. Mill levies are set per tax district, so no single citywide rate is honest. Use the Boulder County Assessor for a specific address.
- Cost-of-living index. C2ER's index is a paid product, and the BLS publishes its CPI for the Denver-Aurora-Lakewood metro area, not for Boulder on its own.
- Boulder vs. Denver comparison and utility costs. No primary source pulled yet.
- Census demographics. The Census API now requires a registered key, and Census QuickFacts blocks automated requests, so nothing ACS-derived could be confirmed on this pass.
Every number here is re-checked at least quarterly. Housing figures move monthly, so treat anything more than a quarter past the date above as stale and re-pull it.