Median rent is 16% lower in Washington ($1,954/mo vs $2,313/mo). Buying is cheaper in Washington, where the median home runs $737,100 versus $906,700. Households earn more in Washington ($109,870 vs $108,077 a year). Taken together, Washington is the more affordable choice with a cost index of 109.5 against 110.7 — about 1% lower overall prices. After adjusting income for local prices, a typical paycheck stretches further in Washington, DC.
Cost of living verdict
Washington is 1% cheaper overall
Cost of Living Index: 109.5 in Washington vs 110.7 in San Diego (US national average = 100)
City A
San Diego, CA
City B
Washington, DC
How much would you need to earn in Washington, DC to maintain your standard of living from San Diego, CA?
Equivalent salary in Washington, DC
$74,189
You could earn $811 less (1% 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
Washington
District of Columbia
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
Median rent is modestly lower in Washington at $1,954/mo compared to $2,313/mo in San Diego (16% gap). Median home values are within 19% of each other: $906,700 in San Diego and $737,100 in Washington.
Metric
San Diego
Washington
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.
San Diego
Income tax: N/A
Sales tax: N/A
Washington
Income tax: N/A
Sales tax: N/A
Washington has cleaner air on average: 24.0 AQI (Good) compared to 59.0 AQI (Moderate) in the other city. Lower AQI means cleaner, healthier air.
Pick Washington if you prioritize cheaper rent ($1,954/mo median).
Pick Washington if you prioritize cleaner air quality (avg AQI 24.0).
Washington is cheaper overall, with a cost of living index of 109.5 versus 110.7 (US average = 100). That means prices run about 1% lower in Washington.
Median rent is $2,313/mo in San Diego, CA and $1,954/mo in Washington, DC. Washington, DC has the lower rent by about 16%.
Median household income is $108,077 in San Diego, CA and $109,870 in Washington, DC. Washington, DC has the higher median income. Note that BLS occupational wages in the table above show wages for specific jobs.
Washington, DC has better air quality on average: 24.0 AQI versus 59.0 AQI. Both are EPA AirNow annual averages; lower is better.
State tax data is not yet available for one or both cities.
To maintain the same purchasing power, a salary of $100,000 in San Diego, CA is equivalent to roughly $98,918 in Washington, DC (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
