Overall
- Trenton-Princeton
- 103.2
- Chicago-Naperville-Elgin
- 103.6
Diff +0.4 RPP
Trenton-Princeton vs Chicago-Naperville-Elgin
Cost of living comparison based on BEA Regional Price Parities. Chicago-Naperville-Elgin is 0.4% more expensive than Trenton-Princeton.
0.4% more expensive
Chicago-Naperville-Elgin, IL-IN is 0.4% more expensive than Trenton-Princeton, NJ on BEA Regional Price Parities (overall RPP 103.6 vs 103.2). A $100,000 salary in Trenton-Princeton buys about the same as $100,402 in Chicago-Naperville-Elgin; the largest component gap is services.
- Overall RPP 103.2 (Trenton-Princeton) vs 103.6 (Chicago-Naperville-Elgin)
- $100k in Trenton-Princeton ≈ $100,402 purchasing power in Chicago-Naperville-Elgin
- Services drives the gap (-28.7 RPP points)
RPP parity plate
Pair NJ:IL 103.2→103.6
PHOTO-FINISH · CROSS-STATE · SPLIT-BUDGET · BOTH-ABOVE · PP-PAR
- PHOTO-FINISH Photo finish
- CROSS-STATE NJ × IL
- SPLIT-BUDGET Split budget
- BOTH-ABOVE Both above 100
- PP-PAR PP near-par
Instrument codes from this pair's BEA Regional Price Parities (overall · goods · services · rents · national benchmark 100 · purchasing-power conversion), not a ranking or recommendation.
Trenton-Princeton
103.2
Cost Index
Chicago-Naperville-Elgin
103.6
Cost Index
What This Comparison Actually Tells You
Trenton-Princeton, NJ and Chicago-Naperville-Elgin, IL-IN are a photo finish on overall price level, only 0.4 RPP points apart. A salary conversion is therefore a fine adjustment, not evidence of a fundamentally different cost regime.
Services creates the largest separation: Chicago-Naperville-Elgin is 28.7 points lower. But services and rents move against the overall direction, so this is a split budget rather than a clean across-the-board winner.
Comparable population context is incomplete for this pair, so no market-scale explanation is inferred from the price indexes.
Both metros exceed the U.S. benchmark of 100. The choice is between two national premiums, so local wages need to clear the higher baseline in either market.
For a service-heavy household, test childcare, health, and other locally supplied costs before relying on rent alone. The BEA ratio converts $100,000 in Trenton-Princeton to $100,402 in Chicago-Naperville-Elgin, but it is not a personal spending weight.
Category Breakdown
Goods
- Trenton-Princeton
- 99.8
- Chicago-Naperville-Elgin
- 107.3
Diff +7.5 RPP
Services
- Trenton-Princeton
- 112.3
Diff -28.7 RPP
Rents
- Trenton-Princeton
- 135.1
- Chicago-Naperville-Elgin
- 112.0
Diff -23.1 RPP
| Category | Trenton-Princeton | Chicago-Naperville-Elgin | Difference |
|---|---|---|---|
| Overall | 103.2 | 103.6 | +0.4 |
| Goods | 99.8 | 107.3 | +7.5 |
| Services | 112.3 | 83.6 | -28.7 |
| Rents | 135.1 | 112.0 | -23.1 |
Visual Comparison
Overall
Trenton-Princeton 103.2
Chicago-Naperville-Elgin 103.6
Goods
Trenton-Princeton 99.8
Chicago-Naperville-Elgin 107.3
Services
Trenton-Princeton 112.3
Chicago-Naperville-Elgin 83.6
Rents
Trenton-Princeton 135.1
Chicago-Naperville-Elgin 112.0
Vertical line = national average (100)
Salary Equivalents
What a salary in Trenton-Princeton would need to be in Chicago-Naperville-Elgin for the same purchasing power:
| In Trenton-Princeton | In Chicago-Naperville-Elgin | Difference |
|---|---|---|
| $50,000 | $50,201 | +$201 |
| $75,000 | $75,302 | +$302 |
| $100,000 | $100,402 | +$402 |
| $150,000 | $150,603 | +$603 |
$ in Trenton-Princeton = in Chicago-Naperville-Elgin
Same BEA Regional Price Parity ratio as the table above (103.2 → 103.6), computed live from your number, nothing is sent anywhere.
Frequently Asked Questions
Is Chicago-Naperville-Elgin more expensive than Trenton-Princeton?
Chicago-Naperville-Elgin is 0.4% more expensive than Trenton-Princeton. The overall cost index is 103.6 vs 103.2 (national average = 100).
What salary in Chicago-Naperville-Elgin equals $100K in Trenton-Princeton?
A $100,000 salary in Trenton-Princeton has the same purchasing power as $100,402 in Chicago-Naperville-Elgin. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Trenton-Princeton and Chicago-Naperville-Elgin?
Rents in Trenton-Princeton are indexed at 135.1 while Chicago-Naperville-Elgin is at 112.0 (national average = 100). Trenton-Princeton has higher rents.
Data sources
- BEA Regional Price Parities (RPP), the cost-of-living indices shown on this page
- U.S. Census Bureau, American Community Survey (ACS), gross-rent observations behind the rents component
- BLS Consumer Price Index (CPI), goods and services price relatives
- BLS Occupational Employment and Wage Statistics (OEWS), labor-driven services component
- HUD Fair Market Rents (FMR), 40th-percentile rent cross-reference
Every figure on PlainCost is rendered directly from BEA Regional Price Parity source data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, our changelog, or report a data error. Data current as of 2026-08-11. Rankings measure the published cost-of-living index only; we don't recommend where to live or rate any metro's quality of life.