City Comparison · 2026
San Diego vs Chicago
Salary, rent, taxes, and purchasing power compared
Purchasing Power
$100k in San Diego = $83k in Chicago
Metric
San Diego
Chicago
COL Index
1.67
✓1.38
1BR Monthly Rent
$2,250/mo
✓$2,000/mo
2BR Monthly Rent
$2,900/mo
✓$2,600/mo
State Income Tax
CA
IL
$100k Take-Home
$73,198
✓$73,786
$100k Effective Rate
26.8%
✓26.21%
$100k Savings Potential
$46,198
✓$49,786
After-Tax Income by Salary
| Gross Salary | San Diego CA | Chicago IL |
|---|---|---|
| $60,000 | $48,276 $4,023/mo · 19.54% eff. | $47,278 $3,940/mo · 21.2% eff. |
| $100,000 | $73,198 $6,100/mo · 26.8% eff. | $73,786 $6,149/mo · 26.21% eff. |
| $150,000 | $103,090 $8,591/mo · 31.27% eff. | $105,853 $8,821/mo · 29.43% eff. |
Frequently Asked Questions
Is San Diego or Chicago cheaper to live in?
San Diego has a cost-of-living index of 1.67 while Chicago is 1.38 (1.00 = US average). Chicago is cheaper overall. 1BR rent in San Diego is $2,250/month vs $2,000/month in Chicago.
How much more do you need to earn in San Diego vs Chicago?
$100k in San Diego = $83k in Chicago. Cost of living in Chicago is lower by 17.4%.
Which city has better after-tax income — San Diego or Chicago?
On a $100,000 salary, you take home $73,198 in CA (San Diego) and $73,786 in IL (Chicago). After accounting for rent, your annual savings potential is $46,198 in San Diego vs $49,786 in Chicago.
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