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US relocation · 2026

Illinois flagChicago → California flagSan Diego

At $100,000 gross, you’d need about $124,786 in San Diego to match Chicago purchasing power — and same-gross take-home shifts by −$1,436/year.

By Sammy S. · Founder · AuthorUpdated for 2026

Stronger purchasing power

Chicago leads

City COL moves +29 from Chicago (117) to San Diego (146). Parent median income delta (Illinois → California): +$15,700. At $100,000 gross: equivalent salary ~$124,786; same-gross take-home −$1,436/year.

Side-by-side city scoreboard

Chicago

85

Purchasing power index · 100 = national avg

COL index
117
Parent median income
77,800 USD
Sales tax
~8.98%
Property tax
~1.88%
Income tax
Taxed
$100k take-home
$74,230
Open calculator →

San Diego

68

Purchasing power index · 100 = national avg

COL index
146
Parent median income
93,500 USD
Sales tax
~9.03%
Property tax
~0.7%
Income tax
Taxed
$100k take-home
$72,794
Open calculator →
●Example scenario: $100,000 gross (Single filer, 2026)
Illustrative numbers only—same formulas as the calculator. Take-home rows assume you earn the scenario gross while living in each city (local taxes apply). Below the tables, use “Open calculator — personalize results” to enter your salary, filing status, rent or buy, and more—the full tool uses this same city pair.

Salary & estimated take-home (USD)

Annual gross (scenario)

Chicago

$100,000

San Diego

$100,000

Est. annual take-home

Chicago

$74,230

San Diego

$72,794

Approx. combined tax + payroll burden

Chicago

25.8%

San Diego

27.2%

Take-home difference at same gross

$-1,436 / yr in San Diego vs Chicago

Equivalent gross for same lifestyle (COL-adjusted)

San Diego only

$124,786

Change vs scenario gross

San Diego only

+24.8%

Est. take-home at equivalent gross

San Diego only

$87,544

Burden at equivalent gross

San Diego only

29.8%

Snapshot: how to read this move ($100,000 scenario)

  • Monthly take-home at the same gross. At $100,000/year, estimated take-home is about $6,186/mo in Chicago vs $6,066/mo in San Diego—roughly $120/mo less in San Diego before housing ($1,436/yr annualized).

  • Cost of living vs taxes. Our benchmark COL index is 117 for Chicago and 146 for San Diego (100 = national average). The destination is about +24.8% more expensive than the origin for that basket—then state/province and payroll taxes shift take-home further.

  • Equivalent salary to keep the same lifestyle. To match purchasing power after COL, the model suggests about $124,786/yr gross in San Diego (~$10,399/mo), with estimated take-home around $7,295/mo. Versus estimated take-home in Chicago at the scenario gross, that is about +17.9% (by design, equivalent gross targets similar real spending power after COL and taxes; exact match varies with rounding).

  • Cash after typical 1BR rent (illustrative). Using average 1-bedroom rent in the housing table, roughly $4,376/mo is left after rent in Chicago at the scenario gross vs $3,566/mo in San Diego at the same gross. At the equivalent gross in San Diego, about $4,795/mo after rent. Typical rent differs by about +$690/mo between the two cities in our data.

Figures use the same tax and COL engine as the calculator; your household, deductions, and neighborhood can change outcomes. Use the calculator below for your exact salary and housing choice.

Housing snapshot · average rent · 1-bedroom apartment

Typical monthly rent

Chicago

$1,810

San Diego

$2,500

Rent as % of scenario gross ($100,000/yr)

Chicago

21.7%

San Diego

30.0%

Rent as % of equivalent gross (San Diego)

San Diego only

24.0%

Rent benchmarks are city-level estimates; neighborhoods vary. Mortgage (buy) and other home sizes are available in the full calculator.

Housing: Chicago → San Diego

Approximate median monthly rents for the primary metros in Chicago and San Diego. Negative delta means housing is cheaper in San Diego. Figures are planning estimates — neighborhoods vary.

1BR rent delta / yr

+$8,280

1BR % of $100k (Chicago)

21.7%

$1,810/mo

1BR % of $100k (San Diego)

30%

$2,500/mo

Property tax (effective)

~1.88% → ~0.7%

Chicago → San Diego

At COL-equivalent salary in San Diego, 1BR rent is about 24% of gross — vs 30% if you keep $100,000 gross.

Apartment rent (monthly)

SizeChicagoSan DiegoDelta / mo
Studio$1,550$1,950+$400
1 bedroom$1,810$2,500+$690
2 bedroom$2,200$3,200+$1,000
3 bedroom$2,800$4,200+$1,400

House rent (monthly)

SizeChicagoSan DiegoDelta / mo
2 bedroom$2,300$3,200+$900
3 bedroom$3,000$4,100+$1,100
4 bedroom$3,700$5,200+$1,500

Buy instead? Est. mortgage (3BR house)

Chicago payment

$3,449/mo

San Diego payment

$4,714/mo

Payment delta

+$1,265

Est. purchase price

$648,000 → $885,600

Illustrative P&I only: 20% down, 7% APR, 30-year fixed. Price ≈ annual rent × 18 (price-to-rent). Taxes, insurance, and HOA not included — open the calculator Housing section to adjust.

Sources: approximate metro medians (Zillow / Zumper-style US benchmarks; CMHC-style for Canada). Property tax rates are statewide effective averages. Personalize unit size, rent vs buy, and down payment in the relocation calculator.

Model housing for Chicago → San Diego

Key takeaways — Chicago → San Diego

  • San Diego has a city cost-of-living index of 146 vs 117 in Chicago (national average = 100) — about 25% more expensive on our index.
  • At $100,000 gross (Single filer), roughly $124,786 in San Diego matches Chicago purchasing power (+24.8% COL-adjusted).
  • Keeping the same $100,000 gross, estimated take-home shifts by about −$1,436/year (Chicago → San Diego) after federal, state, and FICA taxes.
  • Parent-state paycheck model at $100k (single): Illinois ~$74,230 vs California ~$72,794 (−$1,436/year) — city COL can still change the equivalent salary you need.
  • Illustrative 1-bedroom rent: ~$1,810/mo in Chicago vs ~$2,500/mo in San Diego (+$8,280/year).
  • Quality-of-life snapshot (indicative): overall 45 in Chicago vs 75 in San Diego — higher safety & better weather in the new city.

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Estimates for planning only. Cost-of-living indices and tax rules change; verify with local sources or a professional before relocating.