Median rent is 25% lower in St. Louis ($997/mo vs $1,324/mo). Buying is cheaper in St. Louis, where the median home runs $197,500 versus $235,700. Households earn more in San Antonio ($65,056 vs $56,160 a year). Taken together, San Antonio is the more affordable choice with a cost index of 94.3 against 95.0 — about 1% lower overall prices. After adjusting income for local prices, a typical paycheck stretches further in San Antonio, TX.
Cost of living verdict
San Antonio is 1% cheaper overall
Cost of Living Index: 94.3 in San Antonio vs 95.0 in St. Louis (US national average = 100)
City A
San Antonio, TX
City B
St. Louis, MO
How much would you need to earn in St. Louis, MO to maintain your standard of living from San Antonio, TX?
Equivalent salary in St. Louis, MO
$75,513
You'd need $513 more (1% higher).
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
San Antonio
Texas
St. Louis
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
Renters will find significantly cheaper housing in St. Louis — median rent of $997/mo versus $1,324/mo in San Antonio, a 25% difference. Median home values are within 16% of each other: $235,700 in San Antonio and $197,500 in St. Louis.
1BR Fair Market Rent
2BR Fair Market Rent
BLS OEWS 2023 — metro-level data
State tax data is not yet available for these cities.
San Antonio
Income tax: N/A
Sales tax: N/A
St. Louis
Income tax: N/A
Sales tax: N/A
St. Louis has cleaner air on average: 33.0 AQI (Good) compared to 71.0 AQI (Moderate) in the other city. Lower AQI means cleaner, healthier air.
Pick San Antonio if you prioritize higher median household income ($65,056/yr).
Pick St. Louis if you prioritize cheaper rent ($997/mo median).
Pick St. Louis if you prioritize cleaner air quality (avg AQI 33.0).
Is San Antonio cheaper than St. Louis?
San Antonio is cheaper overall, with a cost of living index of 94.3 versus 95.0 (US average = 100). That means prices run about 1% lower in San Antonio.
How much is rent in San Antonio vs St. Louis?
Median rent is $1,324/mo in San Antonio, TX and $997/mo in St. Louis, MO. St. Louis, MO has the lower rent by about 25%.
Which has higher salaries — San Antonio or St. Louis?
Median household income is $65,056 in San Antonio, TX and $56,160 in St. Louis, MO. San Antonio, TX 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?
St. Louis, MO has better air quality on average: 33.0 AQI versus 71.0 AQI. Both are EPA AirNow annual averages; lower is better.
Which has lower taxes — San Antonio or St. Louis?
State tax data is not yet available for one or both cities.
What salary do I need in St. Louis to match my San Antonio income?
To maintain the same purchasing power, a salary of $100,000 in San Antonio, TX is equivalent to roughly $100,684 in St. Louis, MO (using the BEA Regional Price Parity ratio). Use the salary calculator above for any income amount.
Data last updated: December 1, 2026 · Sources: US Census ACS, BEA RPP, BLS OEWS, HUD FMR, EPA AirNow, Tax Foundation · Methodology
