Overall
- Trenton-Princeton
- 103.2
- Decatur
- 87.2
Diff -16.0 RPP
Trenton-Princeton vs Decatur
Cost of living comparison based on BEA Regional Price Parities. Decatur is 15.5% less expensive than Trenton-Princeton.
15.5% less expensive
Decatur, AL is 15.5% less expensive than Trenton-Princeton, NJ on BEA Regional Price Parities (overall RPP 87.2 vs 103.2). A $100,000 salary in Trenton-Princeton buys about the same as $84,524 in Decatur; the largest component gap is rents.
- Overall RPP 103.2 (Trenton-Princeton) vs 87.2 (Decatur)
- $100k in Trenton-Princeton ≈ $84,524 purchasing power in Decatur
- Rents drives the gap (-77.0 RPP points)
RPP parity plate
Pair NJ:AL 103.2→87.2
TIER-GAP · CROSS-STATE · RENT-LED · BENCH-CROSS · PP-STEEP
- TIER-GAP Clear tier gap
- CROSS-STATE NJ × AL
- RENT-LED Rent-led gap
- BENCH-CROSS Benchmark cross
- PP-STEEP Steep PP convert
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 Trenton-Princeton would need to be in Decatur for the same purchasing power:
| In Trenton-Princeton | In Decatur | Difference |
|---|---|---|
| $50,000 | $42,262 | $-7,738 |
| $75,000 | $63,393 | $-11,607 |
| $100,000 | $84,524 | $-15,476 |
| $150,000 | $126,786 | $-23,214 |
$ in Trenton-Princeton = in Decatur
Same BEA Regional Price Parity ratio as the table above (103.2 → 87.2), computed live from your number, nothing is sent anywhere.
What This Comparison Actually Tells You
Trenton-Princeton, NJ and Decatur, AL sit in clearly different price tiers, separated by 16.0 RPP points. At this distance, treating the same nominal salary as equivalent would materially change purchasing power.
This route crosses the national benchmark: Trenton-Princeton is above 100 while Decatur is below it. That makes the move a change of price regime, not merely a rank swap.
Rents leads the difference, with Decatur 77.0 points lower than Trenton-Princeton. 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 Trenton-Princeton corresponds to $84,524 in Decatur.
Category Breakdown
Goods
- Trenton-Princeton
- 99.8
- Decatur
- 96.4
Diff -3.4 RPP
Services
- Trenton-Princeton
- 112.3
- Decatur
- 84.7
Diff -27.5 RPP
Rents
- Trenton-Princeton
- 135.1
- Decatur
- 58.1
Diff -77.0 RPP
| Category | Trenton-Princeton | Decatur | Difference |
|---|---|---|---|
| Overall | 103.2 | 87.2 | -16.0 |
| Goods | 99.8 | 96.4 | -3.4 |
| Services | 112.3 | 84.7 | -27.5 |
| Rents | 135.1 | 58.1 | -77.0 |
Visual Comparison
Overall
Trenton-Princeton 103.2
Decatur 87.2
Goods
Trenton-Princeton 99.8
Decatur 96.4
Services
Trenton-Princeton 112.3
Decatur 84.7
Rents
Trenton-Princeton 135.1
Decatur 58.1
Vertical line = national average (100)
Trenton-Princeton
103.2
Cost Index
Decatur
87.2
Cost Index
Frequently Asked Questions
Is Decatur more expensive than Trenton-Princeton?
Decatur is 15.5% less expensive than Trenton-Princeton. The overall cost index is 87.2 vs 103.2 (national average = 100).
What salary in Decatur equals $100K in Trenton-Princeton?
A $100,000 salary in Trenton-Princeton has the same purchasing power as $84,524 in Decatur. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Trenton-Princeton and Decatur?
Rents in Trenton-Princeton are indexed at 135.1 while Decatur is at 58.1 (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.