Overall
- Kahului-Wailuku
- 109.4
- Napa
- 112.6
Diff +3.2 RPP
Kahului-Wailuku vs Napa
Cost of living comparison based on BEA Regional Price Parities. Napa is 2.9% more expensive than Kahului-Wailuku.
2.9% more expensive
Napa, CA is 2.9% more expensive than Kahului-Wailuku, HI on BEA Regional Price Parities (overall RPP 112.6 vs 109.4). A $100,000 salary in Kahului-Wailuku buys about the same as $102,890 in Napa; the largest component gap is rents.
- Overall RPP 109.4 (Kahului-Wailuku) vs 112.6 (Napa)
- $100k in Kahului-Wailuku ≈ $102,890 purchasing power in Napa
- Rents drives the gap (+78.3 RPP points)
RPP parity plate
Pair HI:CA 109.4→112.6
TIER-NEAR · CROSS-STATE · SPLIT-BUDGET · BOTH-ABOVE · PP-SHIFT
- TIER-NEAR Near tier
- CROSS-STATE HI × CA
- 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
- Kahului-Wailuku
- 111.6
- Napa
- 105.2
Diff -6.4 RPP
Services
- Kahului-Wailuku
- 190.6
- Napa
- 156.5
Diff -34.0 RPP
Rents
- Kahului-Wailuku
- 119.2
- Napa
- 197.4
Diff +78.3 RPP
| Category | Kahului-Wailuku | Napa | Difference |
|---|---|---|---|
| Overall | 109.4 | 112.6 | +3.2 |
| Goods | 111.6 | 105.2 | -6.4 |
| Services | 190.6 | 156.5 | -34.0 |
| Rents | 119.2 | 197.4 | +78.3 |
Visual Comparison
Overall
Kahului-Wailuku 109.4
Napa 112.6
Goods
Kahului-Wailuku 111.6
Napa 105.2
Services
Kahului-Wailuku 190.6
Napa 156.5
Rents
Kahului-Wailuku 119.2
Napa 197.4
Vertical line = national average (100)
What This Comparison Actually Tells You
Rents creates the largest separation: Napa is 78.3 points higher. But services and goods move against the overall direction, so this is a split budget rather than a clean across-the-board winner.
Napa, CA is 2.9% more expensive than Kahului-Wailuku, HI, a meaningful but not extreme shift. The move decision turns on which budget category creates the 3.2-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 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 Kahului-Wailuku corresponds to $102,890 in Napa.
Kahului-Wailuku
109.4
Cost Index
Napa
112.6
Cost Index
Salary Equivalents
What a salary in Kahului-Wailuku would need to be in Napa for the same purchasing power:
| In Kahului-Wailuku | In Napa | Difference |
|---|---|---|
| $50,000 | $51,445 | +$1,445 |
| $75,000 | $77,167 | +$2,167 |
| $100,000 | $102,890 | +$2,890 |
| $150,000 | $154,334 | +$4,334 |
$ in Kahului-Wailuku = in Napa
Same BEA Regional Price Parity ratio as the table above (109.4 → 112.6), computed live from your number, nothing is sent anywhere.
Frequently Asked Questions
Is Napa more expensive than Kahului-Wailuku?
Napa is 2.9% more expensive than Kahului-Wailuku. The overall cost index is 112.6 vs 109.4 (national average = 100).
What salary in Napa equals $100K in Kahului-Wailuku?
A $100,000 salary in Kahului-Wailuku has the same purchasing power as $102,890 in Napa. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Kahului-Wailuku and Napa?
Rents in Kahului-Wailuku are indexed at 119.2 while Napa is at 197.4 (national average = 100). Napa 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.