Cost of Living: Simi Valley, CA vs Springfield, IL (2026)

Simi Valley

California
200
VS

Springfield

Illinois
61

Simi Valley is 228% more expensive than Springfield.

$2,513/mo ↑ 166%
Median Rent
$945/mo ↓ 62%
$117,703/yr ↑ 80%
Median Income
$65,537/yr ↓ 44%
$753,500 ↑ 386%
Home Value
$155,200 ↓ 79%
$2,576/mo ↑ 164%
Owner Costs
$974/mo ↓ 62%
125,769
Population
113,714

Tax Comparison

13.3%
Income Tax
4.95%
7.25%
State Sales Tax
6.25%
0.71%
Property Tax
2.07%

Affordability

25.6%
rent-to-income
Affordability
17.3%
rent-to-income

Detailed Comparison

When comparing Simi Valley, CA and Springfield, IL, the overall cost of living indices are 200 and 61 respectively (national median = 100). Rent is $1,568/month cheaper in Springfield, saving renters about $18,816/year.

Median household income is $52,166/year higher in Simi Valley. Home values also differ significantly — the median in Simi Valley is $753,500 compared to $155,200 in Springfield.

Illinois has a lower income tax rate, making Springfield slightly more tax-friendly.

Frequently Asked Questions

Simi Valley vs Springfield — common questions

Is Simi Valley or Springfield cheaper to live in?
Based on our cost index, Springfield is cheaper to live in with an index of 61 compared to 200 (US average = 100).
What is the rent difference between Simi Valley and Springfield?
Median rent in Simi Valley is $2,513/month and in Springfield it's $945/month — a difference of $1,568/month.
Which city has higher income, Simi Valley or Springfield?
Median household income is $117,703 in Simi Valley and $65,537 in Springfield. Median household income is $52,166/year higher in Simi Valley.
How do taxes compare between California and Illinois?
California has 13.3% income tax, 7.25% sales tax, and 0.71% property tax. Illinois has 4.95% income tax, 6.25% sales tax, and 2.07% property tax.
Should I move to Simi Valley or Springfield?
It depends on your priorities. Simi Valley has a cost index of 200 with median rent of $2,513/mo, while Springfield has a cost index of 61 with rent of $945/mo. Consider income potential, tax burden, and lifestyle preferences alongside raw cost data.
View Simi Valley details → View Springfield details →

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