Overall
- Santa Rosa-Petaluma
- 107.8
- Kahului-Wailuku
- 109.4
Diff +1.6 RPP
Santa Rosa-Petaluma vs Kahului-Wailuku
Cost of living comparison based on BEA Regional Price Parities. Kahului-Wailuku is 1.5% more expensive than Santa Rosa-Petaluma.
1.5% more expensive
Kahului-Wailuku, HI is 1.5% more expensive than Santa Rosa-Petaluma, CA on BEA Regional Price Parities (overall RPP 109.4 vs 107.8). A $100,000 salary in Santa Rosa-Petaluma buys about the same as $101,493 in Kahului-Wailuku; the largest component gap is services.
- Overall RPP 107.8 (Santa Rosa-Petaluma) vs 109.4 (Kahului-Wailuku)
- $100k in Santa Rosa-Petaluma ≈ $101,493 purchasing power in Kahului-Wailuku
- Services drives the gap (+35.8 RPP points)
RPP parity plate
Pair CA:HI 107.8→109.4
PHOTO-FINISH · CROSS-STATE · SPLIT-BUDGET · BOTH-ABOVE · PP-PAR
- PHOTO-FINISH Photo finish
- CROSS-STATE CA × HI
- 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.
Santa Rosa-Petaluma
107.8
Cost Index
Kahului-Wailuku
109.4
Cost Index
What This Comparison Actually Tells You
Santa Rosa-Petaluma, CA and Kahului-Wailuku, HI are a photo finish on overall price level, only 1.6 RPP points apart. A salary conversion is therefore a fine adjustment, not evidence of a fundamentally different cost regime.
Services creates the largest separation: Kahului-Wailuku is 35.8 points higher. But 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 Santa Rosa-Petaluma to $101,493 in Kahului-Wailuku, but it is not a personal spending weight.
Category Breakdown
Goods
- Santa Rosa-Petaluma
- 105.2
- Kahului-Wailuku
- 111.6
Diff +6.4 RPP
Services
- Santa Rosa-Petaluma
- 154.8
- Kahului-Wailuku
- 190.6
Diff +35.8 RPP
Rents
- Santa Rosa-Petaluma
- 139.6
- Kahului-Wailuku
- 119.2
Diff -20.4 RPP
| Category | Santa Rosa-Petaluma | Kahului-Wailuku | Difference |
|---|---|---|---|
| Overall | 107.8 | 109.4 | +1.6 |
| Goods | 105.2 | 111.6 | +6.4 |
| Services | 154.8 | 190.6 | +35.8 |
| Rents | 139.6 | 119.2 | -20.4 |
Visual Comparison
Overall
Santa Rosa-Petaluma 107.8
Kahului-Wailuku 109.4
Goods
Santa Rosa-Petaluma 105.2
Kahului-Wailuku 111.6
Services
Santa Rosa-Petaluma 154.8
Kahului-Wailuku 190.6
Rents
Santa Rosa-Petaluma 139.6
Kahului-Wailuku 119.2
Vertical line = national average (100)
Salary Equivalents
What a salary in Santa Rosa-Petaluma would need to be in Kahului-Wailuku for the same purchasing power:
| In Santa Rosa-Petaluma | In Kahului-Wailuku | Difference |
|---|---|---|
| $50,000 | $50,746 | +$746 |
| $75,000 | $76,120 | +$1,120 |
| $100,000 | $101,493 | +$1,493 |
| $150,000 | $152,239 | +$2,239 |
$ in Santa Rosa-Petaluma = in Kahului-Wailuku
Same BEA Regional Price Parity ratio as the table above (107.8 → 109.4), computed live from your number, nothing is sent anywhere.
Frequently Asked Questions
Is Kahului-Wailuku more expensive than Santa Rosa-Petaluma?
Kahului-Wailuku is 1.5% more expensive than Santa Rosa-Petaluma. The overall cost index is 109.4 vs 107.8 (national average = 100).
What salary in Kahului-Wailuku equals $100K in Santa Rosa-Petaluma?
A $100,000 salary in Santa Rosa-Petaluma has the same purchasing power as $101,493 in Kahului-Wailuku. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Santa Rosa-Petaluma and Kahului-Wailuku?
Rents in Santa Rosa-Petaluma are indexed at 139.6 while Kahului-Wailuku is at 119.2 (national average = 100). Santa Rosa-Petaluma 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.