Median rent is 46% lower in Chicago ($1,440/mo vs $2,664/mo). Buying is cheaper in Chicago, where the median home runs $334,100 versus $991,600. Households earn more in Thousand Oaks ($135,603 vs $77,902 a year). Taken together, Thousand Oaks is the more affordable choice with a cost index of 85.8 against 102.5 — about 16% lower overall prices. After adjusting income for local prices, a typical paycheck stretches further in Thousand Oaks, CA.
Cost of living verdict
Thousand Oaks is 16% cheaper overall
Cost of Living Index: 85.8 in Thousand Oaks vs 102.5 in Chicago (US national average = 100)
City A
Chicago, IL
City B
Thousand Oaks, CA
How much would you need to earn in Thousand Oaks, CA to maintain your standard of living from Chicago, IL?
Equivalent salary in Thousand Oaks, CA
$62,818
You could earn $12,182 less (16% lower) and break even.
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
Thousand Oaks
California
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 Chicago — median rent of $1,440/mo versus $2,664/mo in Thousand Oaks, a 46% difference. Home buyers face a steeper market in Thousand Oaks: the median home is $991,600 versus $334,100 in Chicago — 66% more expensive.
Metric
Chicago
Thousand Oaks
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
Thousand Oaks
Income tax: N/A
Sales tax: N/A
Air quality data is available for Chicago (avg AQI 31.0) but not yet for Thousand Oaks.
Pick Thousand Oaks if you prioritize lower overall cost of living (index 85.8 vs 102.5).
Pick Thousand Oaks if you prioritize higher median household income ($135,603/yr).
Pick Chicago if you prioritize cheaper rent ($1,440/mo median).
Thousand Oaks is cheaper overall, with a cost of living index of 85.8 versus 102.5 (US average = 100). That means prices run about 16% lower in Thousand Oaks.
Median rent is $1,440/mo in Chicago, IL and $2,664/mo in Thousand Oaks, CA. Chicago, IL has the lower rent by about 46%.
Median household income is $77,902 in Chicago, IL and $135,603 in Thousand Oaks, CA. Thousand Oaks, CA 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.
To maintain the same purchasing power, a salary of $100,000 in Chicago, IL is equivalent to roughly $83,757 in Thousand Oaks, CA (using the BEA Regional Price Parity ratio). Use the salary calculator above for any income amount.
Data last updated: June 1, 2026 · Sources: US Census ACS, BEA RPP, BLS OEWS, HUD FMR, EPA AirNow, Tax Foundation · Methodology
