Overall
Diff -0.2 RPP
Cost of living comparison based on BEA Regional Price Parities. Columbus is 0.2% less expensive than Helena.
Columbus, OH is 0.2% less expensive than Helena, MT on BEA Regional Price Parities (overall RPP 95.5 vs 95.7). A $100,000 salary in Helena buys about the same as $99,785 in Columbus; the largest component gap is services.
RPP parity plate
Pair MT:OH 95.7→95.5
PHOTO-FINISH · CROSS-STATE · SPLIT-BUDGET · BOTH-BELOW · PP-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.
Helena, MT and Columbus, OH are a photo finish on overall price level, only 0.2 RPP points apart. A salary conversion is therefore a fine adjustment, not evidence of a fundamentally different cost regime.
Services creates the largest separation: Columbus is 22.9 points higher. But services 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 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.
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 Helena to $99,785 in Columbus, but it is not a personal spending weight.
Diff -0.2 RPP
Diff -2.4 RPP
Diff +22.9 RPP
Diff -2.2 RPP
| Category | Helena | Columbus | Difference |
|---|---|---|---|
| Overall | 95.7 | 95.5 | -0.2 |
| Goods | 96.0 | 93.6 | -2.4 |
| Services | 72.6 | 95.5 | +22.9 |
| Rents | 90.1 | 87.9 | -2.2 |
Vertical line = national average (100)
What a salary in Helena would need to be in Columbus for the same purchasing power:
| In Helena | In Columbus | Difference |
|---|---|---|
| $50,000 | $49,892 | $-108 |
| $75,000 | $74,839 | $-161 |
| $100,000 | $99,785 | $-215 |
| $150,000 | $149,677 | $-323 |
Same BEA Regional Price Parity ratio as the table above (95.7 → 95.5), computed live from your number, nothing is sent anywhere.
Columbus is 0.2% less expensive than Helena. The overall cost index is 95.5 vs 95.7 (national average = 100).
A $100,000 salary in Helena has the same purchasing power as $99,785 in Columbus. This is based on the BEA Regional Price Parity indexes.
Rents in Helena are indexed at 90.1 while Columbus is at 87.9 (national average = 100). Helena has higher rents.
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.