Overall
- Napa
- 112.6
- Chicago-Naperville-Elgin
- 103.6
Diff -9.0 RPP
Napa vs Chicago-Naperville-Elgin
Cost of living comparison based on BEA Regional Price Parities. Chicago-Naperville-Elgin is 8% less expensive than Napa.
8% less expensive
Chicago-Naperville-Elgin, IL-IN is 8% less expensive than Napa, CA on BEA Regional Price Parities (overall RPP 103.6 vs 112.6). A $100,000 salary in Napa buys about the same as $92,040 in Chicago-Naperville-Elgin; the largest component gap is rents.
- Overall RPP 112.6 (Napa) vs 103.6 (Chicago-Naperville-Elgin)
- $100k in Napa ≈ $92,040 purchasing power in Chicago-Naperville-Elgin
- Rents drives the gap (-85.4 RPP points)
RPP parity plate
Pair CA:IL 112.6→103.6
TIER-GAP · CROSS-STATE · SPLIT-BUDGET · BOTH-ABOVE · PP-SHIFT
- TIER-GAP Clear tier gap
- CROSS-STATE CA × IL
- SPLIT-BUDGET Split budget
- BOTH-ABOVE Both above 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.
Category Breakdown
Goods
- Napa
- 105.2
- Chicago-Naperville-Elgin
- 107.3
Diff +2.1 RPP
Services
- Napa
- 156.5
Diff -73.0 RPP
Rents
- Napa
- 197.4
- Chicago-Naperville-Elgin
- 112.0
Diff -85.4 RPP
| Category | Napa | Chicago-Naperville-Elgin | Difference |
|---|---|---|---|
| Overall | 112.6 | 103.6 | -9.0 |
| Goods | 105.2 | 107.3 | +2.1 |
| Services | 156.5 | 83.6 | -73.0 |
| Rents | 197.4 | 112.0 | -85.4 |
Visual Comparison
Overall
Napa 112.6
Chicago-Naperville-Elgin 103.6
Goods
Napa 105.2
Chicago-Naperville-Elgin 107.3
Services
Napa 156.5
Chicago-Naperville-Elgin 83.6
Rents
Napa 197.4
Chicago-Naperville-Elgin 112.0
Vertical line = national average (100)
What This Comparison Actually Tells You
Rents creates the largest separation: Chicago-Naperville-Elgin is 85.4 points lower. But goods move against the overall direction, so this is a split budget rather than a clean across-the-board winner.
Napa, CA and Chicago-Naperville-Elgin, IL-IN sit in clearly different price tiers, separated by 9.0 RPP points. At this distance, treating the same nominal salary as equivalent would materially change purchasing power.
Both metros exceed the U.S. benchmark of 100. The choice is between two national premiums, so local wages need to clear the higher baseline in either market.
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 Napa corresponds to $92,040 in Chicago-Naperville-Elgin.
Napa
112.6
Cost Index
Chicago-Naperville-Elgin
103.6
Cost Index
Salary Equivalents
What a salary in Napa would need to be in Chicago-Naperville-Elgin for the same purchasing power:
| In Napa | In Chicago-Naperville-Elgin | Difference |
|---|---|---|
| $50,000 | $46,020 | $-3,980 |
| $75,000 | $69,030 | $-5,970 |
| $100,000 | $92,040 | $-7,960 |
| $150,000 | $138,060 | $-11,940 |
$ in Napa = in Chicago-Naperville-Elgin
Same BEA Regional Price Parity ratio as the table above (112.6 → 103.6), computed live from your number, nothing is sent anywhere.
Frequently Asked Questions
Is Chicago-Naperville-Elgin more expensive than Napa?
Chicago-Naperville-Elgin is 8% less expensive than Napa. The overall cost index is 103.6 vs 112.6 (national average = 100).
What salary in Chicago-Naperville-Elgin equals $100K in Napa?
A $100,000 salary in Napa has the same purchasing power as $92,040 in Chicago-Naperville-Elgin. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Napa and Chicago-Naperville-Elgin?
Rents in Napa are indexed at 197.4 while Chicago-Naperville-Elgin is at 112.0 (national average = 100). Napa 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.