Overall
- Chicago-Naperville-Elgin
- 103.6
- Kennewick-Richland
- 100.1
Diff -3.5 RPP
Chicago-Naperville-Elgin vs Kennewick-Richland
Cost of living comparison based on BEA Regional Price Parities. Kennewick-Richland is 3.4% less expensive than Chicago-Naperville-Elgin.
3.4% less expensive
Kennewick-Richland, WA is 3.4% less expensive than Chicago-Naperville-Elgin, IL-IN on BEA Regional Price Parities (overall RPP 100.1 vs 103.6). A $100,000 salary in Chicago-Naperville-Elgin buys about the same as $96,606 in Kennewick-Richland; the largest component gap is rents.
- Overall RPP 103.6 (Chicago-Naperville-Elgin) vs 100.1 (Kennewick-Richland)
- $100k in Chicago-Naperville-Elgin ≈ $96,606 purchasing power in Kennewick-Richland
- Rents drives the gap (-17.2 RPP points)
RPP parity plate
Pair IL:WA 103.6→100.1
TIER-NEAR · CROSS-STATE · SPLIT-BUDGET · BOTH-ABOVE · PP-SHIFT
- TIER-NEAR Near tier
- CROSS-STATE IL × WA
- 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
- Chicago-Naperville-Elgin
- 107.3
- Kennewick-Richland
- 105.0
Diff -2.2 RPP
Services
- Kennewick-Richland
- 93.6
Diff +10.0 RPP
Rents
- Chicago-Naperville-Elgin
- 112.0
- Kennewick-Richland
- 94.8
Diff -17.2 RPP
| Category | Chicago-Naperville-Elgin | Kennewick-Richland | Difference |
|---|---|---|---|
| Overall | 103.6 | 100.1 | -3.5 |
| Goods | 107.3 | 105.0 | -2.2 |
| Services | 83.6 | 93.6 | +10.0 |
| Rents | 112.0 | 94.8 | -17.2 |
Visual Comparison
Overall
Chicago-Naperville-Elgin 103.6
Kennewick-Richland 100.1
Goods
Chicago-Naperville-Elgin 107.3
Kennewick-Richland 105.0
Services
Chicago-Naperville-Elgin 83.6
Kennewick-Richland 93.6
Rents
Chicago-Naperville-Elgin 112.0
Kennewick-Richland 94.8
Vertical line = national average (100)
What This Comparison Actually Tells You
Rents creates the largest separation: Kennewick-Richland is 17.2 points lower. But services move against the overall direction, so this is a split budget rather than a clean across-the-board winner.
Kennewick-Richland, WA is 3.4% less expensive than Chicago-Naperville-Elgin, IL-IN, a meaningful but not extreme shift. The move decision turns on which budget category creates the 3.5-point overall gap.
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 Chicago-Naperville-Elgin corresponds to $96,606 in Kennewick-Richland.
Chicago-Naperville-Elgin
103.6
Cost Index
Kennewick-Richland
100.1
Cost Index
Salary Equivalents
What a salary in Chicago-Naperville-Elgin would need to be in Kennewick-Richland for the same purchasing power:
| In Chicago-Naperville-Elgin | In Kennewick-Richland | Difference |
|---|---|---|
| $50,000 | $48,303 | $-1,697 |
| $75,000 | $72,455 | $-2,545 |
| $100,000 | $96,606 | $-3,394 |
| $150,000 | $144,909 | $-5,091 |
$ in Chicago-Naperville-Elgin = in Kennewick-Richland
Same BEA Regional Price Parity ratio as the table above (103.6 → 100.1), computed live from your number, nothing is sent anywhere.
How the Price Gap Changed
Chicago-Naperville-Elgin and Kennewick-Richland share 17 published annual releases from 2008 through 2024. Their overall gap narrowed, moving from 11.3 to 3.5 RPP points. Chicago-Naperville-Elgin remained the higher-index metro in the latest release.
Services changed the most within this pair: its gap moved 33.3 points between the first and latest shared releases (23.4 to 10.0 points). This describes a relative price-index history, not a forecast or a household budget.
| Release Year | Chicago-Naperville-Elgin RPP | Kennewick-Richland RPP | Relative Gap |
|---|---|---|---|
| 2008 | 105.4 | 94.2 | 11.3 points Chicago-Naperville-Elgin higher |
| 2012 | 105.1 | 99.3 | 5.8 points Chicago-Naperville-Elgin higher |
| 2016 | 103.8 | 97.4 | 6.4 points Chicago-Naperville-Elgin higher |
| 2020 | 104.5 | 99.8 | 4.7 points Chicago-Naperville-Elgin higher |
| 2024 | 103.6 | 100.1 | 3.5 points Chicago-Naperville-Elgin 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.
Frequently Asked Questions
Is Kennewick-Richland more expensive than Chicago-Naperville-Elgin?
Kennewick-Richland is 3.4% less expensive than Chicago-Naperville-Elgin. The overall cost index is 100.1 vs 103.6 (national average = 100).
What salary in Kennewick-Richland equals $100K in Chicago-Naperville-Elgin?
A $100,000 salary in Chicago-Naperville-Elgin has the same purchasing power as $96,606 in Kennewick-Richland. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Chicago-Naperville-Elgin and Kennewick-Richland?
Rents in Chicago-Naperville-Elgin are indexed at 112.0 while Kennewick-Richland is at 94.8 (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.