Median rent is 5% lower in O'Fallon ($1,312/mo vs $1,380/mo). Buying is cheaper in O'Fallon, where the median home runs $274,100 versus $315,200. Households earn more in O'Fallon ($102,793 vs $75,134 a year).
City A
Chicago, IL
City B
O'Fallon, IL
How much would you need to earn in O'Fallon, IL to maintain your standard of living from Chicago, IL?
A cost-of-living index isn't available for one of these cities yet, so we can't compute an equivalent salary.
Based on BEA Regional Price Parity (cost index) for each city's metro area. A rough estimate of overall purchasing power, not tax or take-home pay.
Metric
Chicago
Illinois
O'Fallon
Illinois
👥Population
💰Median Household Income
Annual
🏠Median Gross Rent
Per month
🏡Median Home Value
📊Cost of Living Index
US avg = 100
🔑1BR Fair Market Rent
HUD FMR
🔑2BR Fair Market Rent
HUD FMR
🔑3BR Fair Market Rent
HUD FMR
🌬️Air Quality Index
Lower = cleaner
🏛️Top State Income Tax
Top marginal rate
🧾State Sales Tax
Statewide base rate
🎂Median Age
Years
✓ = better value · Sources: US Census ACS, BEA RPP, HUD FMR, EPA AirNow, Tax Foundation
Median rents are similar in both cities: $1,380/mo in Chicago and $1,312/mo in O'Fallon. Median home values are within 13% of each other: $315,200 in Chicago and $274,100 in O'Fallon.
1BR Fair Market Rent
2BR Fair Market Rent
BLS OEWS 2023 — metro-level data
Illinois's top income tax rate is 4.95% versus 4.95% in Illinois, so O'Fallon is more tax-friendly for high earners. Sales tax is 6.25% in Illinois and 6.25% in Illinois; O'Fallon has the lower rate (local add-ons may apply in both).
Chicago
Income tax: 4.95%
Sales tax: 6.25%
O'Fallon
Income tax: 4.95%
Sales tax: 6.25%
Air quality data is available for Chicago (avg AQI 21.0) but not yet for O'Fallon.
Pick O'Fallon if you prioritize higher median household income ($102,793/yr).
Is Chicago cheaper than O'Fallon?
Cost of living index data is not yet available for one or both cities.
How much is rent in Chicago vs O'Fallon?
Median rent is $1,380/mo in Chicago, IL and $1,312/mo in O'Fallon, IL. O'Fallon, IL has the lower rent by about 5%.
Which has higher salaries — Chicago or O'Fallon?
Median household income is $75,134 in Chicago, IL and $102,793 in O'Fallon, IL. O'Fallon, IL has the higher median income. Note that BLS occupational wages in the table above show wages for specific jobs.
Which city has better air quality?
Air quality data is not yet available for one or both cities.
Which has lower taxes — Chicago or O'Fallon?
Illinois's top income tax rate is 4.95% and Illinois's is 4.95%. O'Fallon, IL has the lower rate.
What salary do I need in O'Fallon to match my Chicago income?
RPP data needed for salary equivalence calculation is not yet available.
Data last updated: December 1, 2024 · Sources: US Census ACS, BEA RPP, BLS OEWS, HUD FMR, EPA AirNow, Tax Foundation · Methodology