Eau Claire vs Chicago-Naperville-Elgin
Cost of living comparison based on BEA Regional Price Parities. Chicago-Naperville-Elgin is 11.6% more expensive than Eau Claire.
Chicago-Naperville-Elgin, IL-IN is 11.6% more expensive than Eau Claire, WI on BEA Regional Price Parities (overall RPP 103.6 vs 92.8). A $100,000 salary in Eau Claire buys about the same as $111,637 in Chicago-Naperville-Elgin; the largest component gap is rents.
- Overall RPP 92.8 (Eau Claire) vs 103.6 (Chicago-Naperville-Elgin)
- $100k in Eau Claire ≈ $111,637 purchasing power in Chicago-Naperville-Elgin
- Rents drives the gap (+39.2 RPP points)
Category Breakdown
| Category | Eau Claire | Chicago-Naperville-Elgin | Difference |
|---|---|---|---|
| Overall | 92.8 | 103.6 | +10.8 |
| Goods | 93.8 | 107.3 | +13.5 |
| Services | 90.9 | 83.6 | -7.4 |
| Rents | 72.8 | 112.0 | +39.2 |
Visual Comparison
Vertical line = national average (100)
What This Comparison Actually Tells You
Rents creates the largest separation: Chicago-Naperville-Elgin is 39.2 points higher. But services move against the overall direction, so this is a split budget rather than a clean across-the-board winner.
Eau Claire, WI and Chicago-Naperville-Elgin, IL-IN sit in clearly different price tiers, separated by 10.8 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 Eau Claire 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 Eau Claire corresponds to $111,637 in Chicago-Naperville-Elgin.
Salary Equivalents
What a salary in Eau Claire would need to be in Chicago-Naperville-Elgin for the same purchasing power:
| In Eau Claire | In Chicago-Naperville-Elgin | Difference |
|---|---|---|
| $50,000 | $55,819 | +$5,819 |
| $75,000 | $83,728 | +$8,728 |
| $100,000 | $111,637 | +$11,637 |
| $150,000 | $167,456 | +$17,456 |
Same BEA Regional Price Parity ratio as the table above (92.8 → 103.6), computed live from your number, nothing is sent anywhere.
Frequently Asked Questions
Is Chicago-Naperville-Elgin more expensive than Eau Claire?
Chicago-Naperville-Elgin is 11.6% more expensive than Eau Claire. The overall cost index is 103.6 vs 92.8 (national average = 100).
What salary in Chicago-Naperville-Elgin equals $100K in Eau Claire?
A $100,000 salary in Eau Claire has the same purchasing power as $111,637 in Chicago-Naperville-Elgin. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Eau Claire and Chicago-Naperville-Elgin?
Rents in Eau Claire are indexed at 72.8 while Chicago-Naperville-Elgin is at 112.0 (national average = 100). Chicago-Naperville-Elgin 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.