Overall
- Amherst Town-Northampton
- 100.2
Diff -11.6 RPP
San Diego-Chula Vista-Carlsbad vs Amherst Town-Northampton
Cost of living comparison based on BEA Regional Price Parities. Amherst Town-Northampton is 10.4% less expensive than San Diego-Chula Vista-Carlsbad.
10.4% less expensive
Amherst Town-Northampton, MA is 10.4% less expensive than San Diego-Chula Vista-Carlsbad, CA on BEA Regional Price Parities (overall RPP 100.2 vs 111.9). A $100,000 salary in San Diego-Chula Vista-Carlsbad buys about the same as $89,593 in Amherst Town-Northampton; the largest component gap is rents.
- Overall RPP 111.9 (San Diego-Chula Vista-Carlsbad) vs 100.2 (Amherst Town-Northampton)
- $100k in San Diego-Chula Vista-Carlsbad ≈ $89,593 purchasing power in Amherst Town-Northampton
- Rents drives the gap (-81.7 RPP points)
RPP parity plate
Pair CA:MA 111.9→100.2
TIER-GAP · CROSS-STATE · RENT-LED · BOTH-ABOVE · PP-SHIFT
- TIER-GAP Clear tier gap
- CROSS-STATE CA × MA
- RENT-LED Rent-led gap
- 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.
Salary Equivalents
What a salary in San Diego-Chula Vista-Carlsbad would need to be in Amherst Town-Northampton for the same purchasing power:
| In San Diego-Chula Vista-Carlsbad | In Amherst Town-Northampton | Difference |
|---|---|---|
| $50,000 | $44,797 | $-5,203 |
| $75,000 | $67,195 | $-7,805 |
| $100,000 | $89,593 | $-10,407 |
| $150,000 | $134,390 | $-15,610 |
$ in San Diego-Chula Vista-Carlsbad = in Amherst Town-Northampton
Same BEA Regional Price Parity ratio as the table above (111.9 → 100.2), computed live from your number, nothing is sent anywhere.
What This Comparison Actually Tells You
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.
San Diego-Chula Vista-Carlsbad, CA and Amherst Town-Northampton, MA sit in clearly different price tiers, separated by 11.6 RPP points. At this distance, treating the same nominal salary as equivalent would materially change purchasing power.
Rents leads the difference, with Amherst Town-Northampton 81.7 points lower than San Diego-Chula Vista-Carlsbad. 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 San Diego-Chula Vista-Carlsbad corresponds to $89,593 in Amherst Town-Northampton.
Category Breakdown
Goods
Diff -10.9 RPP
Services
- Amherst Town-Northampton
- 155.7
Diff -18.5 RPP
Rents
Diff -81.7 RPP
| Category | San Diego-Chula Vista-Carlsbad | Amherst Town-Northampton | Difference |
|---|---|---|---|
| Overall | 111.9 | 100.2 | -11.6 |
| Goods | 108.0 | 97.0 | -10.9 |
| Services | 174.2 | 155.7 | -18.5 |
| Rents | 179.3 | 97.5 | -81.7 |
Visual Comparison
Overall
San Diego-Chula Vista-Carlsbad 111.9
Amherst Town-Northampton 100.2
Goods
San Diego-Chula Vista-Carlsbad 108.0
Amherst Town-Northampton 97.0
Services
San Diego-Chula Vista-Carlsbad 174.2
Amherst Town-Northampton 155.7
Rents
San Diego-Chula Vista-Carlsbad 179.3
Amherst Town-Northampton 97.5
Vertical line = national average (100)
San Diego-Chula Vista-Carlsbad
111.9
Cost Index
Amherst Town-Northampton
100.2
Cost Index
How the Price Gap Changed
San Diego-Chula Vista-Carlsbad and Amherst Town-Northampton share 17 published annual releases from 2008 through 2024. Their overall gap narrowed, moving from 14.0 to 11.6 RPP points. San Diego-Chula Vista-Carlsbad remained the higher-index metro in the latest release.
Services changed the most within this pair: its gap moved 35.2 points between the first and latest shared releases (16.6 to 18.5 points). This describes a relative price-index history, not a forecast or a household budget.
| Release Year | San Diego-Chula Vista-Carlsbad RPP | Amherst Town-Northampton RPP | Relative Gap |
|---|---|---|---|
| 2008 | 113.7 | 99.7 | 14.0 points San Diego-Chula Vista-Carlsbad higher |
| 2012 | 112.9 | 99.3 | 13.5 points San Diego-Chula Vista-Carlsbad higher |
| 2016 | 113.6 | 99.7 | 13.9 points San Diego-Chula Vista-Carlsbad higher |
| 2020 | 115.1 | 101.8 | 13.4 points San Diego-Chula Vista-Carlsbad higher |
| 2024 | 111.9 | 100.2 | 11.6 points San Diego-Chula Vista-Carlsbad 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 Amherst Town-Northampton more expensive than San Diego-Chula Vista-Carlsbad?
Amherst Town-Northampton is 10.4% less expensive than San Diego-Chula Vista-Carlsbad. The overall cost index is 100.2 vs 111.9 (national average = 100).
What salary in Amherst Town-Northampton equals $100K in San Diego-Chula Vista-Carlsbad?
A $100,000 salary in San Diego-Chula Vista-Carlsbad has the same purchasing power as $89,593 in Amherst Town-Northampton. This is based on the BEA Regional Price Parity indexes.
How do rents compare between San Diego-Chula Vista-Carlsbad and Amherst Town-Northampton?
Rents in San Diego-Chula Vista-Carlsbad are indexed at 179.3 while Amherst Town-Northampton is at 97.5 (national average = 100). San Diego-Chula Vista-Carlsbad 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.