Median rent is 22% lower in St. Peters ($1,291/mo vs $1,655/mo). Buying is cheaper in St. Peters, where the median home runs $252,800 versus $512,700. Households earn more in Austin ($91,461 vs $89,827 a year). Taken together, Austin is the more affordable choice with a cost index of 98.8 against 99.9 — about 1% lower overall prices. After adjusting income for local prices, a typical paycheck stretches further in Austin, TX.
Quick verdict
Austin is 1% cheaper overall
Cost index: 98.8 in Austin vs 99.9 in St. Peters (US average = 100)
City A
Austin, TX
City B
St. Peters, MO
How much would you need to earn in St. Peters, MO to maintain your standard of living from Austin, TX?
Equivalent salary in St. Peters, MO
$75,794
You'd need $794 more (1% higher).
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
St. Peters
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: US Census ACS, BEA RPP, HUD FMR, EPA AirNow, Tax Foundation
Renters will find significantly cheaper housing in St. Peters — median rent of $1,291/mo versus $1,655/mo in Austin, a 22% difference. Home buyers face a steeper market in Austin: the median home is $512,700 versus $252,800 in St. Peters — 51% more expensive.
1BR Fair Market Rent
2BR Fair Market Rent
BLS OEWS 2023 — metro-level data
Texas has no state income tax, while Missouri tops out at 4.80% — giving Austin a clear advantage for high earners. Sales tax is 6.25% in Texas and 4.22% in Missouri; St. Peters has the lower rate (local add-ons may apply in both).
Austin
Income tax: None
Sales tax: 6.25%
St. Peters
Income tax: 4.80%
Sales tax: 4.22%
Air quality data is available for Austin (avg AQI 47.0) but not yet for St. Peters.
Pick St. Peters if you prioritize cheaper rent ($1,291/mo median).
Pick Austin if you prioritize no state income tax.
Is Austin cheaper than St. Peters?
Austin is cheaper overall, with a cost of living index of 98.8 versus 99.9 (US average = 100). That means prices run about 1% lower in Austin.
How much is rent in Austin vs St. Peters?
Median rent is $1,655/mo in Austin, TX and $1,291/mo in St. Peters, MO. St. Peters, MO has the lower rent by about 22%.
Which has higher salaries — Austin or St. Peters?
Median household income is $91,461 in Austin, TX and $89,827 in St. Peters, MO. Austin, 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?
Air quality data is not yet available for one or both cities.
Which has lower taxes — Austin or St. Peters?
Texas has no state income tax. Missouri has a top rate of 4.80%.
What salary do I need in St. Peters to match my Austin income?
To maintain the same purchasing power, a salary of $100,000 in Austin, TX is equivalent to roughly $101,059 in St. Peters, MO (using the BEA Regional Price Parity ratio). Use the salary calculator above for any income amount.
Data last updated: December 1, 2024 · Sources: US Census ACS, BEA RPP, BLS OEWS, HUD FMR, EPA AirNow, Tax Foundation · Methodology