Overall
- Trenton-Princeton
- 103.2
- Kahului-Wailuku
- 109.4
Diff +6.2 RPP
Trenton-Princeton vs Kahului-Wailuku
Cost of living comparison based on BEA Regional Price Parities. Kahului-Wailuku is 6% more expensive than Trenton-Princeton.
6% more expensive
Kahului-Wailuku, HI is 6% more expensive than Trenton-Princeton, NJ on BEA Regional Price Parities (overall RPP 109.4 vs 103.2). A $100,000 salary in Trenton-Princeton buys about the same as $106,022 in Kahului-Wailuku; the largest component gap is services.
- Overall RPP 103.2 (Trenton-Princeton) vs 109.4 (Kahului-Wailuku)
- $100k in Trenton-Princeton ≈ $106,022 purchasing power in Kahului-Wailuku
- Services drives the gap (+78.3 RPP points)
RPP parity plate
Pair NJ:HI 103.2→109.4
TIER-NEAR · CROSS-STATE · SPLIT-BUDGET · BOTH-ABOVE · PP-SHIFT
- TIER-NEAR Near tier
- CROSS-STATE NJ × HI
- SPLIT-BUDGET Split budget
- BOTH-ABOVE Both above 100
- 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.
Category Breakdown
Goods
- Trenton-Princeton
- 99.8
- Kahului-Wailuku
- 111.6
Diff +11.8 RPP
Services
- Trenton-Princeton
- 112.3
- Kahului-Wailuku
- 190.6
Diff +78.3 RPP
Rents
- Trenton-Princeton
- 135.1
- Kahului-Wailuku
- 119.2
Diff -15.9 RPP
| Category | Trenton-Princeton | Kahului-Wailuku | Difference |
|---|---|---|---|
| Overall | 103.2 | 109.4 | +6.2 |
| Goods | 99.8 | 111.6 | +11.8 |
| Services | 112.3 | 190.6 | +78.3 |
| Rents | 135.1 | 119.2 | -15.9 |
Visual Comparison
Overall
Trenton-Princeton 103.2
Kahului-Wailuku 109.4
Goods
Trenton-Princeton 99.8
Kahului-Wailuku 111.6
Services
Trenton-Princeton 112.3
Kahului-Wailuku 190.6
Rents
Trenton-Princeton 135.1
Kahului-Wailuku 119.2
Vertical line = national average (100)
What This Comparison Actually Tells You
Services creates the largest separation: Kahului-Wailuku is 78.3 points higher. But rents move against the overall direction, so this is a split budget rather than a clean across-the-board winner.
Kahului-Wailuku, HI is 6% more expensive than Trenton-Princeton, NJ, a meaningful but not extreme shift. The move decision turns on which budget category creates the 6.2-point overall gap.
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.
Comparable population context is incomplete for this pair, so no market-scale explanation is inferred from the price indexes.
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 $106,022 in Kahului-Wailuku, but it is not a personal spending weight.
Trenton-Princeton
103.2
Cost Index
Kahului-Wailuku
109.4
Cost Index
Salary Equivalents
What a salary in Trenton-Princeton would need to be in Kahului-Wailuku for the same purchasing power:
| In Trenton-Princeton | In Kahului-Wailuku | Difference |
|---|---|---|
| $50,000 | $53,011 | +$3,011 |
| $75,000 | $79,516 | +$4,516 |
| $100,000 | $106,022 | +$6,022 |
| $150,000 | $159,032 | +$9,032 |
$ in Trenton-Princeton = in Kahului-Wailuku
Same BEA Regional Price Parity ratio as the table above (103.2 → 109.4), computed live from your number, nothing is sent anywhere.
How the Price Gap Changed
Trenton-Princeton and Kahului-Wailuku share 17 published annual releases from 2008 through 2024. Their overall gap widened, moving from 2.9 to 6.2 RPP points. Kahului-Wailuku remained the higher-index metro in the latest release.
Services changed the most within this pair: its gap moved 76.9 points between the first and latest shared releases (1.4 to 78.3 points). This describes a relative price-index history, not a forecast or a household budget.
| Release Year | Trenton-Princeton RPP | Kahului-Wailuku RPP | Relative Gap |
|---|---|---|---|
| 2008 | 104.6 | 107.5 | 2.9 points Kahului-Wailuku higher |
| 2012 | 108.4 | 102.7 | 5.7 points Trenton-Princeton higher |
| 2016 | 108.8 | 102.9 | 5.9 points Trenton-Princeton higher |
| 2020 | 104.2 | 111.5 | 7.4 points Kahului-Wailuku higher |
| 2024 | 103.2 | 109.4 | 6.2 points Kahului-Wailuku 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 Kahului-Wailuku more expensive than Trenton-Princeton?
Kahului-Wailuku is 6% more expensive than Trenton-Princeton. The overall cost index is 109.4 vs 103.2 (national average = 100).
What salary in Kahului-Wailuku equals $100K in Trenton-Princeton?
A $100,000 salary in Trenton-Princeton has the same purchasing power as $106,022 in Kahului-Wailuku. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Trenton-Princeton and Kahului-Wailuku?
Rents in Trenton-Princeton are indexed at 135.1 while Kahului-Wailuku is at 119.2 (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.