Overall
- Boston-Cambridge-Newton
- 108.3
- Santa Rosa-Petaluma
- 107.8
Diff -0.5 RPP
Boston-Cambridge-Newton vs Santa Rosa-Petaluma
Cost of living comparison based on BEA Regional Price Parities. Santa Rosa-Petaluma is 0.4% less expensive than Boston-Cambridge-Newton.
0.4% less expensive
Santa Rosa-Petaluma, CA is 0.4% less expensive than Boston-Cambridge-Newton, MA-NH on BEA Regional Price Parities (overall RPP 107.8 vs 108.3). A $100,000 salary in Boston-Cambridge-Newton buys about the same as $99,555 in Santa Rosa-Petaluma; the largest component gap is rents.
- Overall RPP 108.3 (Boston-Cambridge-Newton) vs 107.8 (Santa Rosa-Petaluma)
- $100k in Boston-Cambridge-Newton ≈ $99,555 purchasing power in Santa Rosa-Petaluma
- Rents drives the gap (-8.9 RPP points)
RPP parity plate
Pair MA:CA 108.3→107.8
PHOTO-FINISH · CROSS-STATE · SPLIT-BUDGET · BOTH-ABOVE · PP-PAR
- PHOTO-FINISH Photo finish
- CROSS-STATE MA × CA
- 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.
Boston-Cambridge-Newton
108.3
Cost Index
Santa Rosa-Petaluma
107.8
Cost Index
What This Comparison Actually Tells You
Boston-Cambridge-Newton, MA-NH and Santa Rosa-Petaluma, CA are a photo finish on overall price level, only 0.5 RPP points apart. A salary conversion is therefore a fine adjustment, not evidence of a fundamentally different cost regime.
Rents creates the largest separation: Santa Rosa-Petaluma is 8.9 points lower. But services and goods 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 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 Boston-Cambridge-Newton corresponds to $99,555 in Santa Rosa-Petaluma.
Category Breakdown
Goods
- Santa Rosa-Petaluma
- 105.2
Diff +5.5 RPP
Services
- Boston-Cambridge-Newton
- 148.8
- Santa Rosa-Petaluma
- 154.8
Diff +6.0 RPP
Rents
- Boston-Cambridge-Newton
- 148.4
- Santa Rosa-Petaluma
- 139.6
Diff -8.9 RPP
| Category | Boston-Cambridge-Newton | Santa Rosa-Petaluma | Difference |
|---|---|---|---|
| Overall | 108.3 | 107.8 | -0.5 |
| Goods | 99.7 | 105.2 | +5.5 |
| Services | 148.8 | 154.8 | +6.0 |
| Rents | 148.4 | 139.6 | -8.9 |
Visual Comparison
Overall
Boston-Cambridge-Newton 108.3
Santa Rosa-Petaluma 107.8
Goods
Boston-Cambridge-Newton 99.7
Santa Rosa-Petaluma 105.2
Services
Boston-Cambridge-Newton 148.8
Santa Rosa-Petaluma 154.8
Rents
Boston-Cambridge-Newton 148.4
Santa Rosa-Petaluma 139.6
Vertical line = national average (100)
Salary Equivalents
What a salary in Boston-Cambridge-Newton would need to be in Santa Rosa-Petaluma for the same purchasing power:
| In Boston-Cambridge-Newton | In Santa Rosa-Petaluma | Difference |
|---|---|---|
| $50,000 | $49,777 | $-223 |
| $75,000 | $74,666 | $-334 |
| $100,000 | $99,555 | $-445 |
| $150,000 | $149,332 | $-668 |
$ in Boston-Cambridge-Newton = in Santa Rosa-Petaluma
Same BEA Regional Price Parity ratio as the table above (108.3 → 107.8), computed live from your number, nothing is sent anywhere.
Frequently Asked Questions
Is Santa Rosa-Petaluma more expensive than Boston-Cambridge-Newton?
Santa Rosa-Petaluma is 0.4% less expensive than Boston-Cambridge-Newton. The overall cost index is 107.8 vs 108.3 (national average = 100).
What salary in Santa Rosa-Petaluma equals $100K in Boston-Cambridge-Newton?
A $100,000 salary in Boston-Cambridge-Newton has the same purchasing power as $99,555 in Santa Rosa-Petaluma. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Boston-Cambridge-Newton and Santa Rosa-Petaluma?
Rents in Boston-Cambridge-Newton are indexed at 148.4 while Santa Rosa-Petaluma is at 139.6 (national average = 100). Boston-Cambridge-Newton 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.