Overall
- Harrisburg-Carlisle
- 98.7
- Helena
- 95.7
Diff -3.0 RPP
Harrisburg-Carlisle vs Helena
Cost of living comparison based on BEA Regional Price Parities. Helena is 3% less expensive than Harrisburg-Carlisle.
3% less expensive
Helena, MT is 3% less expensive than Harrisburg-Carlisle, PA on BEA Regional Price Parities (overall RPP 95.7 vs 98.7). A $100,000 salary in Harrisburg-Carlisle buys about the same as $96,984 in Helena; the largest component gap is services.
- Overall RPP 98.7 (Harrisburg-Carlisle) vs 95.7 (Helena)
- $100k in Harrisburg-Carlisle ≈ $96,984 purchasing power in Helena
- Services drives the gap (-35.4 RPP points)
RPP parity plate
Pair PA:MT 98.7→95.7
TIER-NEAR · CROSS-STATE · SERVICES-LED · BOTH-BELOW · PP-SHIFT
- TIER-NEAR Near tier
- CROSS-STATE PA × MT
- SERVICES-LED Services-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.
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.
Helena, MT is 3% less expensive than Harrisburg-Carlisle, PA, a meaningful but not extreme shift. The move decision turns on which budget category creates the 3.0-point overall gap.
Services leads the difference, with Helena 35.4 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 service-heavy household, test childcare, health, and other locally supplied costs before relying on rent alone. The BEA ratio converts $100,000 in Harrisburg-Carlisle to $96,984 in Helena, but it is not a personal spending weight.
How the Price Gap Changed
Harrisburg-Carlisle and Helena share 17 published annual releases from 2008 through 2024. Their overall gap held broadly steady, moving from 3.0 to 3.0 RPP points. Harrisburg-Carlisle remained the higher-index metro in the latest release.
Goods changed the most within this pair: its gap moved 5.3 points between the first and latest shared releases (0.6 to 4.7 points). This describes a relative price-index history, not a forecast or a household budget.
| Release Year | Harrisburg-Carlisle RPP | Helena RPP | Relative Gap |
|---|---|---|---|
| 2008 | 99.0 | 96.0 | 3.0 points Harrisburg-Carlisle higher |
| 2012 | 97.0 | 92.0 | 5.0 points Harrisburg-Carlisle higher |
| 2016 | 98.2 | 95.6 | 2.6 points Harrisburg-Carlisle higher |
| 2020 | 96.1 | 92.0 | 4.1 points Harrisburg-Carlisle higher |
| 2024 | 98.7 | 95.7 | 3.0 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.
Category Breakdown
Goods
- Harrisburg-Carlisle
- 100.7
- Helena
- 96.0
Diff -4.7 RPP
Services
- Harrisburg-Carlisle
- 108.1
- Helena
- 72.6
Diff -35.4 RPP
Rents
- Harrisburg-Carlisle
- 96.3
- Helena
- 90.1
Diff -6.1 RPP
| Category | Harrisburg-Carlisle | Helena | Difference |
|---|---|---|---|
| Overall | 98.7 | 95.7 | -3.0 |
| Goods | 100.7 | 96.0 | -4.7 |
| Services | 108.1 | 72.6 | -35.4 |
| Rents | 96.3 | 90.1 | -6.1 |
Visual Comparison
Overall
Harrisburg-Carlisle 98.7
Helena 95.7
Goods
Harrisburg-Carlisle 100.7
Helena 96.0
Services
Harrisburg-Carlisle 108.1
Helena 72.6
Rents
Harrisburg-Carlisle 96.3
Helena 90.1
Vertical line = national average (100)
Salary Equivalents
What a salary in Harrisburg-Carlisle would need to be in Helena for the same purchasing power:
| In Harrisburg-Carlisle | In Helena | Difference |
|---|---|---|
| $50,000 | $48,492 | $-1,508 |
| $75,000 | $72,738 | $-2,262 |
| $100,000 | $96,984 | $-3,016 |
| $150,000 | $145,476 | $-4,524 |
$ in Harrisburg-Carlisle = in Helena
Same BEA Regional Price Parity ratio as the table above (98.7 → 95.7), computed live from your number, nothing is sent anywhere.
Harrisburg-Carlisle
98.7
Cost Index
Helena
95.7
Cost Index
Frequently Asked Questions
Is Helena more expensive than Harrisburg-Carlisle?
Helena is 3% less expensive than Harrisburg-Carlisle. The overall cost index is 95.7 vs 98.7 (national average = 100).
What salary in Helena equals $100K in Harrisburg-Carlisle?
A $100,000 salary in Harrisburg-Carlisle has the same purchasing power as $96,984 in Helena. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Harrisburg-Carlisle and Helena?
Rents in Harrisburg-Carlisle are indexed at 96.3 while Helena is at 90.1 (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.