Colorado · Population 142,878 · Updated March 2026
How far your income goes in Thornton
State-level tax rates that affect your costs
Thornton has a significantly higher cost of living than most US cities, driven largely by premium housing costs. With a cost index of 138 (where 100 equals the national median), Thornton residents can expect to pay median rent of $1,810/month while earning a median household income of $100,985/year.
The median home value in Thornton, CO is $482,200, with typical monthly owner costs around $1,914 including mortgage, insurance, and taxes. The median rent-to-income ratio of 21.5% means housing is relatively affordable here — well below the 30% threshold that HUD considers cost-burdened.
Colorado has a moderate income tax rate of 4.4%. Combined with a 2.9% sales tax rate and 0.51% effective property tax rate, the overall tax environment is a factor in the total cost of living in Thornton.
Common questions about living costs in Thornton
Similar-sized cities to compare
Compare the cost of living in Thornton, CO with 299 other major U.S. cities