Median rent is 21% lower in O'Fallon ($1,312/mo vs $1,655/mo). Buying is cheaper in O'Fallon, where the median home runs $274,100 versus $512,700. Households earn more in O'Fallon ($102,793 vs $91,461 a year).
City A
Austin, TX
City B
O'Fallon, IL
How much would you need to earn in O'Fallon, IL to maintain your standard of living from Austin, TX?
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
Austin
Texas
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
Renters will find significantly cheaper housing in O'Fallon — median rent of $1,312/mo versus $1,655/mo in Austin, a 21% difference. Home buyers face a steeper market in Austin: the median home is $512,700 versus $274,100 in O'Fallon — 47% more expensive.
1BR Fair Market Rent
2BR Fair Market Rent
BLS OEWS 2023 — metro-level data
Texas has no state income tax, while Illinois tops out at 4.95% — giving Austin a clear advantage for high earners. Sales tax is 6.25% in Texas and 6.25% in Illinois; O'Fallon has the lower rate (local add-ons may apply in both).
Austin
Income tax: None
Sales tax: 6.25%
O'Fallon
Income tax: 4.95%
Sales tax: 6.25%
Air quality data is available for Austin (avg AQI 47.0) but not yet for O'Fallon.
Pick O'Fallon if you prioritize higher median household income ($102,793/yr).
Pick O'Fallon if you prioritize cheaper rent ($1,312/mo median).
Pick Austin if you prioritize no state income tax.
Is Austin cheaper than O'Fallon?
Cost of living index data is not yet available for one or both cities.
How much is rent in Austin vs O'Fallon?
Median rent is $1,655/mo in Austin, TX and $1,312/mo in O'Fallon, IL. O'Fallon, IL has the lower rent by about 21%.
Which has higher salaries — Austin or O'Fallon?
Median household income is $91,461 in Austin, TX 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 — Austin or O'Fallon?
Texas has no state income tax. Illinois has a top rate of 4.95%.
What salary do I need in O'Fallon to match my Austin 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