Cost of Living: Thornton, CO vs Simi Valley, CA (2026)

Thornton

Colorado
138
VS

Simi Valley

California
200

Thornton is 31% cheaper than Simi Valley.

$1,810/mo ↓ 28%
Median Rent
$2,513/mo ↑ 39%
$100,985/yr ↓ 14%
Median Income
$117,703/yr ↑ 17%
$482,200 ↓ 36%
Home Value
$753,500 ↑ 56%
$1,914/mo ↓ 26%
Owner Costs
$2,576/mo ↑ 35%
142,878
Population
125,769

Tax Comparison

4.4%
Income Tax
13.3%
2.9%
State Sales Tax
7.25%
0.51%
Property Tax
0.71%

Affordability

21.5%
rent-to-income
Affordability
25.6%
rent-to-income

Detailed Comparison

When comparing Thornton, CO and Simi Valley, CA, the overall cost of living indices are 138 and 200 respectively (national median = 100). Rent is $703/month cheaper in Thornton, saving renters about $8,436/year.

Median household income is $16,718/year higher in Simi Valley. Home values also differ significantly — the median in Thornton is $482,200 compared to $753,500 in Simi Valley.

Colorado has a lower income tax rate, making Thornton slightly more tax-friendly.

Frequently Asked Questions

Thornton vs Simi Valley — common questions

Is Thornton or Simi Valley cheaper to live in?
Based on our cost index, Thornton is cheaper to live in with an index of 138 compared to 200 (US average = 100).
What is the rent difference between Thornton and Simi Valley?
Median rent in Thornton is $1,810/month and in Simi Valley it's $2,513/month — a difference of $703/month.
Which city has higher income, Thornton or Simi Valley?
Median household income is $100,985 in Thornton and $117,703 in Simi Valley. Median household income is $16,718/year higher in Simi Valley.
How do taxes compare between Colorado and California?
Colorado has 4.4% income tax, 2.9% sales tax, and 0.51% property tax. California has 13.3% income tax, 7.25% sales tax, and 0.71% property tax.
Should I move to Thornton or Simi Valley?
It depends on your priorities. Thornton has a cost index of 138 with median rent of $1,810/mo, while Simi Valley has a cost index of 200 with rent of $2,513/mo. Consider income potential, tax burden, and lifestyle preferences alongside raw cost data.
View Thornton details → View Simi Valley details →

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