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.
Quick verdict
Washington is 1% cheaper overall
Cost index: 109.5 in Washington vs 110.7 in San Diego (US 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 city's metro area. A rough estimate of overall purchasing power, not tax or take-home pay.
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: US Census ACS, BEA RPP, HUD FMR, 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.
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
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).
Is San Diego cheaper than Washington?
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.
How much is rent in San Diego vs 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%.
Which has higher salaries — San Diego or Washington?
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.
Which city has better air quality?
Washington, DC has better air quality on average: 24.0 AQI versus 59.0 AQI. Both are EPA AirNow annual averages; lower is better.
Which has lower taxes — San Diego or Washington?
State tax data is not yet available for one or both cities.
What salary do I need in Washington 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 $98,918 in Washington, DC (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
