Overall
- Chicago-Naperville-Elgin
- 103.6
Diff -8.0 RPP
Cost of living comparison based on BEA Regional Price Parities. Grand Rapids-Wyoming-Kentwood is 7.8% less expensive than Chicago-Naperville-Elgin.
Grand Rapids-Wyoming-Kentwood, MI is 7.8% less expensive than Chicago-Naperville-Elgin, IL-IN on BEA Regional Price Parities (overall RPP 95.5 vs 103.6). A $100,000 salary in Chicago-Naperville-Elgin buys about the same as $92,230 in Grand Rapids-Wyoming-Kentwood; the largest component gap is rents.
RPP parity plate
Pair IL:MI 103.6→95.5
TIER-GAP · CROSS-STATE · SPLIT-BUDGET · BENCH-CROSS · 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.
Diff -8.0 RPP
Diff -13.5 RPP
Diff +10.2 RPP
Diff -25.4 RPP
| Category | Chicago-Naperville-Elgin | Grand Rapids-Wyoming-Kentwood | Difference |
|---|---|---|---|
| Overall | 103.6 | 95.5 | -8.0 |
| Goods | 107.3 | 93.7 | -13.5 |
| Services | 83.6 | 93.8 | +10.2 |
| Rents | 112.0 | 86.6 | -25.4 |
Vertical line = national average (100)
Rents creates the largest separation: Grand Rapids-Wyoming-Kentwood is 25.4 points lower. But services move against the overall direction, so this is a split budget rather than a clean across-the-board winner.
Chicago-Naperville-Elgin, IL-IN and Grand Rapids-Wyoming-Kentwood, MI sit in clearly different price tiers, separated by 8.0 RPP points. At this distance, treating the same nominal salary as equivalent would materially change purchasing power.
This route crosses the national benchmark: Chicago-Naperville-Elgin is above 100 while Grand Rapids-Wyoming-Kentwood is below it. That makes the move a change of price regime, not merely a rank swap.
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 Chicago-Naperville-Elgin corresponds to $92,230 in Grand Rapids-Wyoming-Kentwood.
What a salary in Chicago-Naperville-Elgin would need to be in Grand Rapids-Wyoming-Kentwood for the same purchasing power:
| In Chicago-Naperville-Elgin | In Grand Rapids-Wyoming-Kentwood | Difference |
|---|---|---|
| $50,000 | $46,115 | $-3,885 |
| $75,000 | $69,173 | $-5,827 |
| $100,000 | $92,230 | $-7,770 |
| $150,000 | $138,345 | $-11,655 |
Same BEA Regional Price Parity ratio as the table above (103.6 → 95.5), computed live from your number, nothing is sent anywhere.
Grand Rapids-Wyoming-Kentwood is 7.8% less expensive than Chicago-Naperville-Elgin. The overall cost index is 95.5 vs 103.6 (national average = 100).
A $100,000 salary in Chicago-Naperville-Elgin has the same purchasing power as $92,230 in Grand Rapids-Wyoming-Kentwood. This is based on the BEA Regional Price Parity indexes.
Rents in Chicago-Naperville-Elgin are indexed at 112.0 while Grand Rapids-Wyoming-Kentwood is at 86.6 (national average = 100). Chicago-Naperville-Elgin 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.