Overall
- Trenton-Princeton
- 103.2
- Kankakee
- 96.4
Diff -6.8 RPP
Trenton-Princeton vs Kankakee
Cost of living comparison based on BEA Regional Price Parities. Kankakee is 6.6% less expensive than Trenton-Princeton.
6.6% less expensive
Kankakee, IL is 6.6% less expensive than Trenton-Princeton, NJ on BEA Regional Price Parities (overall RPP 96.4 vs 103.2). A $100,000 salary in Trenton-Princeton buys about the same as $93,423 in Kankakee; the largest component gap is rents.
- Overall RPP 103.2 (Trenton-Princeton) vs 96.4 (Kankakee)
- $100k in Trenton-Princeton ≈ $93,423 purchasing power in Kankakee
- Rents drives the gap (-42.2 RPP points)
RPP parity plate
Pair NJ:IL 103.2→96.4
TIER-NEAR · CROSS-STATE · RENT-LED · BENCH-CROSS · PP-SHIFT
- TIER-NEAR Near tier
- CROSS-STATE NJ × IL
- RENT-LED Rent-led gap
- BENCH-CROSS Benchmark cross
- PP-SHIFT PP shift
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.
Salary Equivalents
What a salary in Trenton-Princeton would need to be in Kankakee for the same purchasing power:
| In Trenton-Princeton | In Kankakee | Difference |
|---|---|---|
| $50,000 | $46,712 | $-3,288 |
| $75,000 | $70,067 | $-4,933 |
| $100,000 | $93,423 | $-6,577 |
| $150,000 | $140,135 | $-9,865 |
$ in Trenton-Princeton = in Kankakee
Same BEA Regional Price Parity ratio as the table above (103.2 → 96.4), computed live from your number, nothing is sent anywhere.
What This Comparison Actually Tells You
Kankakee, IL is 6.6% less expensive than Trenton-Princeton, NJ, a meaningful but not extreme shift. The move decision turns on which budget category creates the 6.8-point overall gap.
This route crosses the national benchmark: Trenton-Princeton is above 100 while Kankakee is below it. That makes the move a change of price regime, not merely a rank swap.
Rents leads the difference, with Kankakee 42.2 points lower than Trenton-Princeton. Goods, services, and rents all point in the same broad direction, making the headline comparison more transferable across household types.
Comparable population context is incomplete for this pair, so no market-scale explanation is inferred from the price indexes.
For a housing-sensitive move, validate the rent gap first: HUD Fair Market Rent and the actual unit size can overturn what the blended index implies. On the BEA ratio alone, $100,000 in Trenton-Princeton corresponds to $93,423 in Kankakee.
Category Breakdown
Goods
- Trenton-Princeton
- 99.8
- Kankakee
- 93.6
Diff -6.1 RPP
Services
- Trenton-Princeton
- 112.3
- Kankakee
- 89.4
Diff -22.8 RPP
Rents
- Trenton-Princeton
- 135.1
- Kankakee
- 92.9
Diff -42.2 RPP
| Category | Trenton-Princeton | Kankakee | Difference |
|---|---|---|---|
| Overall | 103.2 | 96.4 | -6.8 |
| Goods | 99.8 | 93.6 | -6.1 |
| Services | 112.3 | 89.4 | -22.8 |
| Rents | 135.1 | 92.9 | -42.2 |
Visual Comparison
Overall
Trenton-Princeton 103.2
Kankakee 96.4
Goods
Trenton-Princeton 99.8
Kankakee 93.6
Services
Trenton-Princeton 112.3
Kankakee 89.4
Rents
Trenton-Princeton 135.1
Kankakee 92.9
Vertical line = national average (100)
Trenton-Princeton
103.2
Cost Index
Kankakee
96.4
Cost Index
How the Price Gap Changed
Trenton-Princeton and Kankakee share 17 published annual releases from 2008 through 2024. Their overall gap widened, moving from 5.1 to 6.8 RPP points. Trenton-Princeton remained the higher-index metro in the latest release.
Services changed the most within this pair: its gap moved 17.7 points between the first and latest shared releases (40.6 to 22.8 points). This describes a relative price-index history, not a forecast or a household budget.
| Release Year | Trenton-Princeton RPP | Kankakee RPP | Relative Gap |
|---|---|---|---|
| 2008 | 104.6 | 99.5 | 5.1 points Trenton-Princeton higher |
| 2012 | 108.4 | 99.2 | 9.2 points Trenton-Princeton higher |
| 2016 | 108.8 | 97.6 | 11.2 points Trenton-Princeton higher |
| 2020 | 104.2 | 90.6 | 13.6 points Trenton-Princeton higher |
| 2024 | 103.2 | 96.4 | 6.8 points Trenton-Princeton higher |
Annual BEA Regional Price Parity releases; a higher index means a higher price level relative to the national average of 100. Selected years shown from the full shared series.
Frequently Asked Questions
Is Kankakee more expensive than Trenton-Princeton?
Kankakee is 6.6% less expensive than Trenton-Princeton. The overall cost index is 96.4 vs 103.2 (national average = 100).
What salary in Kankakee equals $100K in Trenton-Princeton?
A $100,000 salary in Trenton-Princeton has the same purchasing power as $93,423 in Kankakee. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Trenton-Princeton and Kankakee?
Rents in Trenton-Princeton are indexed at 135.1 while Kankakee is at 92.9 (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.