Cost of Living: Naperville, IL vs Westminster, CO (2026)

Naperville

Illinois
147
VS

Westminster

Colorado
139

Naperville is 6% more expensive than Westminster.

$1,852/mo ↑ 2%
Median Rent
$1,816/mo ↓ 2%
$150,937/yr ↑ 57%
Median Income
$96,145/yr ↓ 36%
$509,900 ↑ 3%
Home Value
$497,400 ↓ 2%
$2,161/mo ↑ 17%
Owner Costs
$1,841/mo ↓ 15%
149,424
Population
115,546

Tax Comparison

4.95%
Income Tax
4.4%
6.25%
State Sales Tax
2.9%
2.07%
Property Tax
0.51%

Affordability

14.7%
rent-to-income
Affordability
22.7%
rent-to-income

Detailed Comparison

When comparing Naperville, IL and Westminster, CO, the overall cost of living indices are 147 and 139 respectively (national median = 100). Rent is comparable in both cities, with less than $50/month separating them.

Median household income is $54,792/year higher in Naperville. Home values also differ significantly — the median in Naperville is $509,900 compared to $497,400 in Westminster.

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

Frequently Asked Questions

Naperville vs Westminster — common questions

Is Naperville or Westminster cheaper to live in?
Based on our cost index, Westminster is cheaper to live in with an index of 139 compared to 147 (US average = 100).
What is the rent difference between Naperville and Westminster?
Median rent in Naperville is $1,852/month and in Westminster it's $1,816/month — a difference of $36/month.
Which city has higher income, Naperville or Westminster?
Median household income is $150,937 in Naperville and $96,145 in Westminster. Median household income is $54,792/year higher in Naperville.
How do taxes compare between Illinois and Colorado?
Illinois has 4.95% income tax, 6.25% sales tax, and 2.07% property tax. Colorado has 4.4% income tax, 2.9% sales tax, and 0.51% property tax.
Should I move to Naperville or Westminster?
It depends on your priorities. Naperville has a cost index of 147 with median rent of $1,852/mo, while Westminster has a cost index of 139 with rent of $1,816/mo. Consider income potential, tax burden, and lifestyle preferences alongside raw cost data.
View Naperville details → View Westminster details →

More Comparisons

Other cost of living comparisons for Naperville and Westminster

Naperville vs. Surprise Naperville vs. Pasadena Naperville vs. Joliet Naperville vs. Mesquite Naperville vs. Jackson Naperville vs. Pomona Westminster vs. Antioch Westminster vs. Manchester Westminster vs. Broken Arrow Westminster vs. Richmond Westminster vs. West Jordan Westminster vs. High Point