Overall
- Chicago-Naperville-Elgin
- 103.6
- Watertown-Fort Drum
- 87.7
Diff -15.9 RPP
Chicago-Naperville-Elgin vs Watertown-Fort Drum
Cost of living comparison based on BEA Regional Price Parities. Watertown-Fort Drum is 15.4% less expensive than Chicago-Naperville-Elgin.
15.4% less expensive
Watertown-Fort Drum, NY is 15.4% less expensive than Chicago-Naperville-Elgin, IL-IN on BEA Regional Price Parities (overall RPP 87.7 vs 103.6). A $100,000 salary in Chicago-Naperville-Elgin buys about the same as $84,647 in Watertown-Fort Drum; the largest component gap is rents.
- Overall RPP 103.6 (Chicago-Naperville-Elgin) vs 87.7 (Watertown-Fort Drum)
- $100k in Chicago-Naperville-Elgin ≈ $84,647 purchasing power in Watertown-Fort Drum
- Rents drives the gap (-58.8 RPP points)
RPP parity plate
Pair IL:NY 103.6→87.7
TIER-GAP · CROSS-STATE · SPLIT-BUDGET · BENCH-CROSS · PP-STEEP
- TIER-GAP Clear tier gap
- CROSS-STATE IL × NY
- SPLIT-BUDGET Split budget
- BENCH-CROSS Benchmark cross
- PP-STEEP Steep PP convert
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
- Watertown-Fort Drum
- 99.7
Diff -7.6 RPP
Services
- Watertown-Fort Drum
- 132.2
Diff +48.6 RPP
Rents
- Chicago-Naperville-Elgin
- 112.0
- Watertown-Fort Drum
- 53.2
Diff -58.8 RPP
| Category | Chicago-Naperville-Elgin | Watertown-Fort Drum | Difference |
|---|---|---|---|
| Overall | 103.6 | 87.7 | -15.9 |
| Goods | 107.3 | 99.7 | -7.6 |
| Services | 83.6 | 132.2 | +48.6 |
| Rents | 112.0 | 53.2 | -58.8 |
Visual Comparison
Overall
Chicago-Naperville-Elgin 103.6
Watertown-Fort Drum 87.7
Goods
Chicago-Naperville-Elgin 107.3
Watertown-Fort Drum 99.7
Services
Chicago-Naperville-Elgin 83.6
Watertown-Fort Drum 132.2
Rents
Chicago-Naperville-Elgin 112.0
Watertown-Fort Drum 53.2
Vertical line = national average (100)
What This Comparison Actually Tells You
Rents creates the largest separation: Watertown-Fort Drum is 58.8 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 Watertown-Fort Drum, NY sit in clearly different price tiers, separated by 15.9 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 Watertown-Fort Drum 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 $84,647 in Watertown-Fort Drum.
Chicago-Naperville-Elgin
103.6
Cost Index
Watertown-Fort Drum
87.7
Cost Index
Salary Equivalents
What a salary in Chicago-Naperville-Elgin would need to be in Watertown-Fort Drum for the same purchasing power:
| In Chicago-Naperville-Elgin | In Watertown-Fort Drum | Difference |
|---|---|---|
| $50,000 | $42,323 | $-7,677 |
| $75,000 | $63,485 | $-11,515 |
| $100,000 | $84,647 | $-15,353 |
| $150,000 | $126,970 | $-23,030 |
$ in Chicago-Naperville-Elgin = in Watertown-Fort Drum
Same BEA Regional Price Parity ratio as the table above (103.6 → 87.7), computed live from your number, nothing is sent anywhere.
Frequently Asked Questions
Is Watertown-Fort Drum more expensive than Chicago-Naperville-Elgin?
Watertown-Fort Drum is 15.4% less expensive than Chicago-Naperville-Elgin. The overall cost index is 87.7 vs 103.6 (national average = 100).
What salary in Watertown-Fort Drum equals $100K in Chicago-Naperville-Elgin?
A $100,000 salary in Chicago-Naperville-Elgin has the same purchasing power as $84,647 in Watertown-Fort Drum. This is based on the BEA Regional Price Parity indexes.
How do rents compare between Chicago-Naperville-Elgin and Watertown-Fort Drum?
Rents in Chicago-Naperville-Elgin are indexed at 112.0 while Watertown-Fort Drum is at 53.2 (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.