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Cost of Living: Aurora, CO vs Thornton, CO

Wondering how far your dollar stretches in Aurora 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.

TL;DR

Aurora cost-of-living index is 107 vs 108 for Thornton (US = 100). Median home: $445,000 vs $465,000. Median rent: $1,650/mo vs $1,700/mo.

Source: Census ACS · Zillow ZHVI/ZORI · BEA RPP, 2026

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Aurora and Thornton have similar costs of living
COL Index: Aurora 107 vs Thornton 108 (national avg = 100)
Written by Jere Salmisto, Founder & Quantitative Systems Builder, CalcFi·Reviewed by CalcFi Editorial·Last reviewed 2026-04-19

Aurora vs Thornton — At a Glance

AuroraMetricThorntonDifference
107Cost of Living Index108+0.9%
$445,000Median Home Price$465,000+4.5%
$1,650Median Monthly Rent$1,700+3.0%
$68,500Median Household Income$80,200+17.1%
0.6%Property Tax Rate0.6%+0.0%
3.8%Unemployment Rate3.5%-7.9%
30 minAverage Commute29 min-3.3%
34.1Median Age33.5-1.8%
395,000Metro Population148,000-62.5%

Data sourced from Census Bureau, BLS, Zillow, and ApartmentAdvisor (2024-2025). COL Index: 100 = national average.

Housing Comparison: Aurora vs Thornton

Monthly mortgage assumes 6.5% interest, 30-year fixed, 20.0%down payment. PITI includes principal, interest, property tax, and homeowner's insurance.

Aurora

Median Home Price$445,000
Down Payment (20.0%)$89,000
Loan Amount$356,000
Principal & Interest$2,250/mo
Property Tax$223/mo
Insurance$130/mo
Monthly PITI$2,602/mo

Thornton

Median Home Price$465,000
Down Payment (20.0%)$93,000
Loan Amount$372,000
Principal & Interest$2,351/mo
Property Tax$233/mo
Insurance$136/mo
Monthly PITI$2,719/mo

Rent & Affordability Ratios

Median Monthly Rent$1,650 vs $1,700 (+$50/mo)
Annual Rent Difference$600/yr more in Thornton
Home Price-to-Income Ratio6.5x (Aurora) vs 5.8x (Thornton)
Years to Save 20% Down (15% savings rate)8.7 yrs (Aurora) vs 7.7 yrs (Thornton)

Buying a home in Aurora costs $2,602/month (PITI) compared to $2,719/month in Thornton — a difference of $117/month or $1,404/year. The price-to-income ratio is 6.5x in Aurora versus 5.8x in Thornton, suggesting Thornton is relatively more affordable for homebuyers relative to local incomes. At a 15% savings rate, it takes 8.7 years to save a down payment in Aurora compared to 7.7 years in Thornton.

Tax Comparison: Aurora vs Thornton

Estimated on each city's median household income, single filer, standard deduction, 2025 rates.

Tax CategoryAuroraThornton
Gross Income$68,500$80,200
State Income Tax$2,354$2,869
Federal Income Tax$6,519$9,093
FICA (SS + Medicare)$5,240$6,135
Property Tax (on median home)$2,670/yr$2,790/yr
State Sales Tax Rate2.9%2.9%
Total Tax Burden$14,113 (20.6%)$18,097 (22.6%)
Take-Home Pay$54,387$62,103

On median household income, total taxes (federal + state + FICA) come to $14,113 in Aurora (20.6% effective) versus $18,097 in Thornton (22.6% effective). After taxes, take-home pay is $54,387 in Aurora and $62,103 in Thornton. Property taxes add $2,670/year on the median Aurora home versus $2,790/year in Thornton.

Salary Equivalence: What Your Income Is Worth

A $68,500 salary in Aurora equals
$69,140
in Thornton
A $80,200 salary in Thornton equals
$79,457
in Aurora

These figures adjust for cost of living using the formula: adjusted = salary × (COL_destination / COL_origin). If you earn $68,500 in Aurora (COL 107) and relocate to Thornton (COL 108), you would need $69,140 to maintain the same purchasing power. This means you would need a raise of $640 to maintain the same standard of living in Thornton.

Quality of Life: Aurora vs Thornton

Average Commute
30 min
Aurora
29 min
Thornton
1 min longer in Aurora
Unemployment Rate
3.8%
Aurora
3.5%
Thornton
Thornton lower
Metro Population
0.4M
Aurora
0.1M
Thornton
Aurora is 2.7x larger

Beyond costs, quality of life matters. The average commute in Aurora is 30 minutes versus 29 minutes in Thornton, a difference of 1 minutes each way. Thornton's lower unemployment rate of 3.5% versus 3.8% suggests a stronger job market. Aurora skews slightly older with a median age of 34.1 vs 33.5 in Thornton.

Other Cost of Living Comparisons

Aurora vs New YorkCOL 107 vs 187Aurora vs Los AngelesCOL 107 vs 173Aurora vs ChicagoCOL 107 vs 114New York vs ThorntonCOL 187 vs 108Los Angeles vs ThorntonCOL 173 vs 108Chicago vs ThorntonCOL 114 vs 108

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Frequently Asked Questions

Is Aurora or Thornton more expensive?

Aurora and Thornton have very similar costs of living, with COL indices of 107 and 108 respectively (national average = 100). Day-to-day expenses, housing, and taxes are comparable between the two metro areas.

How much more does housing cost in Thornton vs Aurora?

The median home price in Thornton is $465,000, which is $20,000 more than Aurora's median of $445,000. Monthly rent follows a similar pattern: $1,700/month in Thornton vs $1,650/month in Aurora, a difference of $50/month or $600/year.

What salary do I need in Thornton to match my Aurora income?

To maintain the same standard of living, a $68,500 salary in Aurora is equivalent to $69,140 in Thornton. This is based on the cost of living index ratio: Aurora's COL index of 107 vs Thornton's 108. Conversely, $80,200 in Thornton equals $79,457 in Aurora.

Which city has lower taxes, Aurora or Thornton?

On a median household income, the combined federal, state, and FICA tax burden is $14,113 (20.6% effective rate) in Aurora vs $18,097 (22.6% effective rate) in Thornton. Property taxes on the median home are $2,670/year in Aurora (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.

What is the median household income in Aurora and Thornton?

Aurora median household income: $68,500/yr. Thornton median household income: $80,200/yr (Census ACS).

How does rent compare in Aurora vs Thornton?

Median monthly rent: $1,650 in Aurora vs $1,700 in Thornton. Annualized that is $19,800 vs $20,400.

Which city is better for remote workers, Aurora or Thornton?

Aurora offers a lower cost of living (index 107 vs 108), which lets remote-workers keeping a coastal salary stretch further. Thornton typically wins on amenities and labor-market depth.

Where does the data on this comparison come from?

Aurora 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.

How often is this Aurora vs Thornton comparison updated?

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.

Does this comparison replace tax or financial advice?

No. The Aurora 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.

Explore More

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Sources & Citations

  1. Zillow Research — ZHVI (home values) & ZORI (observed rent index) — zillow.com/research/data
  2. U.S. Census Bureau — American Community Survey (ACS) 5-year estimates — census.gov/acs
  3. Bureau of Economic Analysis — Regional Price Parities by state and MSA — bea.gov/rpp
  4. Tax Foundation — effective state and local tax rates — taxfoundation.org
  5. Freddie Mac PMMS — weekly national average mortgage rates — freddiemac.com/pmms
  6. Internal Revenue Service — federal income tax brackets and standard deduction — irs.gov
  7. U.S. Bureau of Labor Statistics — unemployment and wage statistics — bls.gov
Methodology & Assumptions

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 2026-04-19.