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US relocation · 2026

Pennsylvania flagPhiladelphia → Illinois flagNaperville

At $100,000 gross, you’d need about $101,887 in Naperville to match Philadelphia purchasing power — and same-gross take-home shifts by −$1,880/year.

By Sammy S. · Founder · AuthorUpdated for 2026

Stronger purchasing power

Philadelphia leads

City COL moves +2 from Philadelphia (106) to Naperville (108). Parent median income delta (Pennsylvania → Illinois): +$5,000. At $100,000 gross: equivalent salary ~$101,887; same-gross take-home −$1,880/year.

Side-by-side city scoreboard

Philadelphia

94

Purchasing power index · 100 = national avg

COL index
106
Parent median income
72,800 USD
Sales tax
~6.34%
Property tax
~1.26%
Income tax
Taxed
$100k take-home
$76,110
Open calculator →

Naperville

93

Purchasing power index · 100 = national avg

COL index
108
Parent median income
77,800 USD
Sales tax
~8.98%
Property tax
~1.88%
Income tax
Taxed
$100k take-home
$74,230
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)

Philadelphia

$100,000

Naperville

$100,000

Est. annual take-home

Philadelphia

$76,110

Naperville

$74,230

Approx. combined tax + payroll burden

Philadelphia

23.9%

Naperville

25.8%

Take-home difference at same gross

$-1,880 / yr in Naperville vs Philadelphia

Equivalent gross for same lifestyle (COL-adjusted)

Naperville only

$101,887

Change vs scenario gross

Naperville only

+1.9%

Est. take-home at equivalent gross

Naperville only

$75,464

Burden at equivalent gross

Naperville only

25.9%

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 $6,343/mo in Philadelphia vs $6,186/mo in Naperville—roughly $157/mo less in Naperville before housing ($1,880/yr annualized).

  • Cost of living vs taxes. Our benchmark COL index is 106 for Philadelphia and 108 for Naperville (100 = national average). The destination is about +1.9% 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 $101,887/yr gross in Naperville (~$8,491/mo), with estimated take-home around $6,289/mo. Versus estimated take-home in Philadelphia at the scenario gross, that is about -0.8% (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 $4,793/mo is left after rent in Philadelphia at the scenario gross vs $4,686/mo in Naperville at the same gross. At the equivalent gross in Naperville, about $4,789/mo after rent. Typical rent differs by about $50/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

Philadelphia

$1,550

Naperville

$1,500

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

Philadelphia

18.6%

Naperville

18.0%

Rent as % of equivalent gross (Naperville)

Naperville only

17.7%

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

Housing: Philadelphia → Naperville

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

1BR rent delta / yr

−$600

1BR % of $100k (Philadelphia)

18.6%

$1,550/mo

1BR % of $100k (Naperville)

18%

$1,500/mo

Property tax (effective)

~1.26% → ~1.88%

Philadelphia → Naperville

At COL-equivalent salary in Naperville, 1BR rent is about 17.7% of gross — vs 18% if you keep $100,000 gross.

Apartment rent (monthly)

SizePhiladelphiaNapervilleDelta / mo
Studio$1,300$1,340+$40
1 bedroom$1,550$1,500−$50
2 bedroom$1,850$1,800−$50
3 bedroom$2,300$2,300+$0

House rent (monthly)

SizePhiladelphiaNapervilleDelta / mo
2 bedroom$2,000$1,950−$50
3 bedroom$2,500$2,400−$100
4 bedroom$3,100$3,000−$100

Buy instead? Est. mortgage (3BR house)

Philadelphia payment

$2,874/mo

Naperville payment

$2,759/mo

Payment delta

−$115

Est. purchase price

$540,000 → $518,400

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 Philadelphia → Naperville

Key takeaways — Philadelphia → Naperville

  • Naperville has a city cost-of-living index of 108 vs 106 in Philadelphia (national average = 100) — about 2% more expensive on our index.
  • At $100,000 gross (Single filer), roughly $101,887 in Naperville matches Philadelphia purchasing power (+1.9% COL-adjusted).
  • Keeping the same $100,000 gross, estimated take-home shifts by about −$1,880/year (Philadelphia → Naperville) after federal, state, and FICA taxes.
  • Parent-state paycheck model at $100k (single): Pennsylvania ~$76,110 vs Illinois ~$74,230 (−$1,880/year) — city COL can still change the equivalent salary you need.
  • Illustrative 1-bedroom rent: ~$1,550/mo in Philadelphia vs ~$1,500/mo in Naperville (−$600/year).
  • Quality-of-life snapshot (indicative): overall 50 in Philadelphia vs 53 in Naperville — higher safety 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.