Wondering how far your dollar stretches in Boulder compared to Thornton? Below we break down housing costs, rent, taxes, income, and quality of life using 2026 data so you can make an informed relocation or remote-work decision. Every number is computed from Census, BLS, and Zillow data specific to these two metro areas.
| Boulder | Metric | Thornton | Difference |
|---|---|---|---|
| 132 | Cost of Living Index | 108 | -18.2% |
| $780,000 | Median Home Price | $465,000 | -40.4% |
| $2,100 | Median Monthly Rent | $1,700 | -19.0% |
| $82,400 | Median Household Income | $80,200 | -2.7% |
| 0.6% | Property Tax Rate | 0.6% | +0.0% |
| 3.3% | Unemployment Rate | 3.5% | +6.1% |
| 23 min | Average Commute | 29 min | +26.1% |
| 29.8 | Median Age | 33.5 | +12.4% |
| 108,000 | Metro Population | 148,000 | +37.0% |
Data sourced from Census Bureau, BLS, Zillow, and ApartmentAdvisor (2024-2025). COL Index: 100 = national average.
Monthly mortgage assumes 6.5% interest, 30-year fixed, 20.0%down payment. PITI includes principal, interest, property tax, and homeowner's insurance.
Buying a home in Boulder costs $4,562/month (PITI) compared to $2,719/month in Thornton — a difference of $1,843/month or $22,116/year. The price-to-income ratio is 9.5x in Boulder versus 5.8x in Thornton, suggesting Thornton is relatively more affordable for homebuyers relative to local incomes. At a 15% savings rate, it takes 12.6 years to save a down payment in Boulder compared to 7.7 years in Thornton.
Estimated on each city's median household income, single filer, standard deduction, 2025 rates.
| Tax Category | Boulder | Thornton |
|---|---|---|
| Gross Income | $82,400 | $80,200 |
| State Income Tax | $2,966 | $2,869 |
| Federal Income Tax | $9,577 | $9,093 |
| FICA (SS + Medicare) | $6,304 | $6,135 |
| Property Tax (on median home) | $4,680/yr | $2,790/yr |
| State Sales Tax Rate | 2.9% | 2.9% |
| Total Tax Burden | $18,847 (22.9%) | $18,097 (22.6%) |
| Take-Home Pay | $63,553 | $62,103 |
On median household income, total taxes (federal + state + FICA) come to $18,847 in Boulder (22.9% effective) versus $18,097 in Thornton (22.6% effective). After taxes, take-home pay is $63,553 in Boulder and $62,103 in Thornton. Property taxes add $4,680/year on the median Boulder home versus $2,790/year in Thornton.
These figures adjust for cost of living using the formula: adjusted = salary × (COL_destination / COL_origin). If you earn $82,400 in Boulder (COL 132) and relocate to Thornton (COL 108), you would need $67,418 to maintain the same purchasing power. This means you can take a pay cut of $14,982 and still maintain your lifestyle in Thornton.
Beyond costs, quality of life matters. The average commute in Boulder is 23 minutes versus 29 minutes in Thornton, a difference of 6 minutes each way. Boulder's lower unemployment rate of 3.3% versus 3.5% suggests a stronger job market. Thornton skews slightly older with a median age of 33.5 vs 29.8 in Boulder.
Boulder is 18.2% more expensive than Thornton overall. Boulder has a cost of living index of 132 compared to 108 for Thornton (national average = 100). The biggest difference is housing: the median home costs $780,000 in Boulder vs $465,000 in Thornton.
The median home price in Boulder is $780,000, which is $315,000 more than Thornton's median of $465,000. Monthly rent follows a similar pattern: $2,100/month in Boulder vs $1,700/month in Thornton, a difference of $400/month or $4,800/year.
To maintain the same standard of living, a $82,400 salary in Boulder is equivalent to $67,418 in Thornton. This is based on the cost of living index ratio: Boulder's COL index of 132 vs Thornton's 108. Conversely, $80,200 in Thornton equals $98,022 in Boulder.
On a median household income, the combined federal, state, and FICA tax burden is $18,847 (22.9% effective rate) in Boulder vs $18,097 (22.6% effective rate) in Thornton. Property taxes on the median home are $4,680/year in Boulder (0.6% rate) vs $2,790/year in Thornton (0.6% rate). Sales tax rates are 2.9% in Colorado and 2.9% in Colorado.
Boulder median household income: $82,400/yr. Thornton median household income: $80,200/yr (Census ACS).
Median monthly rent: $2,100 in Boulder vs $1,700 in Thornton. Annualized that is $25,200 vs $20,400.
Thornton offers a lower cost of living (index 108 vs 132), which lets remote-workers keeping a coastal salary stretch further. Boulder typically wins on amenities and labor-market depth.
Boulder and Thornton numbers are pulled from Zillow ZHVI/ZORI (home values, rent), the U.S. Census Bureau ACS (income, demographics), and BEA RPP (cost-of-living index). Each value is timestamped on the page.
Source feeds (Zillow, Freddie Mac PMMS, Census ACS, BEA RPP) are refreshed on their native cadence. Page caches revalidate every 24 hours via Next.js ISR.
No. The Boulder vs Thornton cost-of-living page is educational reference using public data and standard formulas. It is not personalized tax, legal, or investment advice. Consult a licensed professional for material decisions.
Home prices use Zillow Home Value Index (ZHVI)[1]; rents use Zillow Observed Rent Index (ZORI)[1]. Median household income comes from the Census ACS 5-year estimates[2].
COL indices use the BEA Regional Price Parity methodology[3], normalized so 100 = national average.
Property tax rates are effective rates from the Tax Foundation[4], expressed as % of owner-occupied home value. Mortgage estimates assume 6.5% fixed rate[5], 30-year term, 20.0% down, $1,800/yr homeowners insurance.
Federal tax calculations[6] assume single filer, standard deduction. State tax uses the top marginal rate times taxable income after the state standard deduction. FICA = 6.2% Social Security (up to wage base) + 1.45% Medicare.
Salary equivalence uses adjusted = salary × (COL_destination / COL_origin). This captures cost-of-living shift but not state income tax differences.
Unemployment figures are the most recent monthly MSA-level readings from the BLS LAUS series[7].
Last reviewed is computed from the maximum retrievedAt across every source this page consumes.
City data from Census Bureau[2], BLS[7], and Zillow[1] (2024-2025). Tax calculations use 2025 IRS rates[6], single filer, standard deduction. Mortgage estimates assume 6.5% PMMS rate[5], 30-year term, 20.0% down. COL Index: 100 = national average[3]. Last reviewed .