Median rent is 13% lower in St. Charles ($1,251/mo vs $1,440/mo). Buying is cheaper in St. Charles, where the median home runs $298,700 versus $334,100. Households earn more in St. Charles ($85,937 vs $77,902 a year).
City A
Chicago, IL
City B
St. Charles, MO
How much would you need to earn in St. Charles, MO 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 metro area. This estimates overall purchasing power; it does not account for taxes or take-home pay differences.
Metric
Chicago
Illinois
St. Charles
Missouri
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: Census ACS, BEA, HUD Fair Market Rents, EPA AirNow, Tax Foundation
Median rent is modestly lower in St. Charles at $1,251/mo compared to $1,440/mo in Chicago (13% gap). Median home values are within 11% of each other: $334,100 in Chicago and $298,700 in St. Charles.
Metric
Chicago
St. Charles
Software Developer
Registered Nurse
Elementary Teacher
Electrician
Accountant
Higher wage highlighted · BLS OEWS 2023 (metro-level data)
State tax data is not yet available for these cities.
Chicago
Income tax: N/A
Sales tax: N/A
St. Charles
Income tax: N/A
Sales tax: N/A
Air quality data is available for Chicago (avg AQI 31.0) but not yet for St. Charles.
Pick St. Charles if you prioritize higher median household income ($85,937/yr).
Pick St. Charles if you prioritize cheaper rent ($1,251/mo median).
Cost of living index data is not yet available for one or both cities.
Median rent is $1,440/mo in Chicago, IL and $1,251/mo in St. Charles, MO. St. Charles, MO has the lower rent by about 13%.
Median household income is $77,902 in Chicago, IL and $85,937 in St. Charles, MO. St. Charles, MO has the higher median income. Note that BLS occupational wages in the table above show wages for specific jobs.
Air quality data is not yet available for one or both cities.
State tax data is not yet available for one or both cities.
RPP data needed for salary equivalence calculation is not yet available.
Data last updated: June 1, 2026 · Sources: US Census ACS, BEA RPP, BLS OEWS, HUD FMR, EPA AirNow, Tax Foundation · Methodology
