Overall
- Harrisburg-Carlisle
- 98.7
- Decatur
- 88.4
Diff -10.2 RPP
Harrisburg-Carlisle vs Decatur
Cost of living comparison based on BEA Regional Price Parities. Decatur is 10.4% less expensive than Harrisburg-Carlisle.
10.4% less expensive
Decatur, IL is 10.4% less expensive than Harrisburg-Carlisle, PA on BEA Regional Price Parities (overall RPP 88.4 vs 98.7). A $100,000 salary in Harrisburg-Carlisle buys about the same as $89,632 in Decatur; the largest component gap is rents.
- Overall RPP 98.7 (Harrisburg-Carlisle) vs 88.4 (Decatur)
- $100k in Harrisburg-Carlisle ≈ $89,632 purchasing power in Decatur
- Rents drives the gap (-40.1 RPP points)
RPP parity plate
Pair PA:IL 98.7→88.4
TIER-GAP · CROSS-STATE · RENT-LED · BOTH-BELOW · PP-SHIFT
- TIER-GAP Clear tier gap
- CROSS-STATE PA × IL
- RENT-LED Rent-led gap
- BOTH-BELOW Both below 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 Harrisburg-Carlisle would need to be in Decatur for the same purchasing power:
| In Harrisburg-Carlisle | In Decatur | Difference |
|---|---|---|
| $50,000 | $44,816 | $-5,184 |
| $75,000 | $67,224 | $-7,776 |
| $100,000 | $89,632 | $-10,368 |
| $150,000 | $134,448 | $-15,552 |
$ in Harrisburg-Carlisle = in Decatur
Same BEA Regional Price Parity ratio as the table above (98.7 → 88.4), computed live from your number, nothing is sent anywhere.
What This Comparison Actually Tells You
Both metros remain below the U.S. benchmark of 100. This comparison chooses between two below-average price levels; “more expensive” here does not mean nationally expensive.
Harrisburg-Carlisle, PA and Decatur, IL sit in clearly different price tiers, separated by 10.2 RPP points. At this distance, treating the same nominal salary as equivalent would materially change purchasing power.
Rents leads the difference, with Decatur 40.1 points lower than Harrisburg-Carlisle. 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 Harrisburg-Carlisle corresponds to $89,632 in Decatur.
Category Breakdown
Goods
- Harrisburg-Carlisle
- 100.7
- Decatur
- 93.6
Diff -7.0 RPP
Services
- Harrisburg-Carlisle
- 108.1
- Decatur
- 91.1
Diff -17.0 RPP
Rents
- Harrisburg-Carlisle
- 96.3
- Decatur
- 56.2
Diff -40.1 RPP
| Category | Harrisburg-Carlisle | Decatur | Difference |
|---|---|---|---|
| Overall | 98.7 | 88.4 | -10.2 |
| Goods | 100.7 | 93.6 | -7.0 |
| Services | 108.1 | 91.1 | -17.0 |
| Rents | 96.3 | 56.2 | -40.1 |
Visual Comparison
Overall
Harrisburg-Carlisle 98.7
Decatur 88.4
Goods
Harrisburg-Carlisle 100.7
Decatur 93.6
Services
Harrisburg-Carlisle 108.1
Decatur 91.1
Rents
Harrisburg-Carlisle 96.3
Decatur 56.2
Vertical line = national average (100)
Harrisburg-Carlisle
98.7
Cost Index
Decatur
88.4
Cost Index
How the Price Gap Changed
Harrisburg-Carlisle and Decatur share 17 published annual releases from 2008 through 2024. Their overall gap widened, moving from 8.0 to 10.2 RPP points. Harrisburg-Carlisle remained the higher-index metro in the latest release.
Rents changed the most within this pair: its gap moved 10.9 points between the first and latest shared releases (29.2 to 40.1 points). This describes a relative price-index history, not a forecast or a household budget.
| Release Year | Harrisburg-Carlisle RPP | Decatur RPP | Relative Gap |
|---|---|---|---|
| 2008 | 99.0 | 91.0 | 8.0 points Harrisburg-Carlisle higher |
| 2012 | 97.0 | 93.0 | 4.0 points Harrisburg-Carlisle higher |
| 2016 | 98.2 | 88.9 | 9.2 points Harrisburg-Carlisle higher |
| 2020 | 96.1 | 88.3 | 7.8 points Harrisburg-Carlisle higher |
| 2024 | 98.7 | 88.4 | 10.2 points Harrisburg-Carlisle 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 Decatur more expensive than Harrisburg-Carlisle?
Decatur is 10.4% less expensive than Harrisburg-Carlisle. The overall cost index is 88.4 vs 98.7 (national average = 100).
What salary in Decatur equals $100K in Harrisburg-Carlisle?
A $100,000 salary in Harrisburg-Carlisle has the same purchasing power as $89,632 in Decatur. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Harrisburg-Carlisle and Decatur?
Rents in Harrisburg-Carlisle are indexed at 96.3 while Decatur is at 56.2 (national average = 100). Harrisburg-Carlisle 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.