Median rent is 50% lower in Tucson ($1,145/mo vs $2,313/mo). Buying is cheaper in Tucson, where the median home runs $266,200 versus $906,700. Households earn more in San Diego ($108,077 vs $57,073 a year). Taken together, Tucson is the more affordable choice with a cost index of 89.9 against 110.7 — about 19% lower overall prices. After adjusting income for local prices, a typical paycheck stretches further in San Diego, CA.
Cost of living verdict
Tucson is 19% cheaper overall
Cost of Living Index: 89.9 in Tucson vs 110.7 in San Diego (US national average = 100)
City A
San Diego, CA
City B
Tucson, AZ
How much would you need to earn in Tucson, AZ to maintain your standard of living from San Diego, CA?
Equivalent salary in Tucson, AZ
$60,882
You could earn $14,118 less (19% 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
San Diego
California
Tucson
Arizona
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 Tucson — median rent of $1,145/mo versus $2,313/mo in San Diego, a 50% difference. Home buyers face a steeper market in San Diego: the median home is $906,700 versus $266,200 in Tucson — 71% more expensive.
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 Diego
Income tax: N/A
Sales tax: N/A
Tucson
Income tax: N/A
Sales tax: N/A
Tucson has cleaner air on average: 26.0 AQI (Good) compared to 59.0 AQI (Moderate) in the other city. Lower AQI means cleaner, healthier air.
Pick Tucson if you prioritize lower overall cost of living (index 89.9 vs 110.7).
Pick San Diego if you prioritize higher median household income ($108,077/yr).
Pick Tucson if you prioritize cheaper rent ($1,145/mo median).
Pick Tucson if you prioritize cleaner air quality (avg AQI 26.0).
Is San Diego cheaper than Tucson?
Tucson is cheaper overall, with a cost of living index of 89.9 versus 110.7 (US average = 100). That means prices run about 19% lower in Tucson.
How much is rent in San Diego vs Tucson?
Median rent is $2,313/mo in San Diego, CA and $1,145/mo in Tucson, AZ. Tucson, AZ has the lower rent by about 50%.
Which has higher salaries — San Diego or Tucson?
Median household income is $108,077 in San Diego, CA and $57,073 in Tucson, AZ. San Diego, CA 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?
Tucson, AZ has better air quality on average: 26.0 AQI versus 59.0 AQI. Both are EPA AirNow annual averages; lower is better.
Which has lower taxes — San Diego or Tucson?
State tax data is not yet available for one or both cities.
What salary do I need in Tucson to match my San Diego income?
To maintain the same purchasing power, a salary of $100,000 in San Diego, CA is equivalent to roughly $81,176 in Tucson, AZ (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
