State comparison · 2025
Data Scientists salary: Illinois vs Washington
Data Scientists in Washington earn a median of $163,350. In Illinois, $106,560. After cost-of-living, the gap is 30.2% — not 34.8%.
Nominal pay gap
-34.8%
Illinois vs Washington
COL-adjusted gap
-30.2%
After BEA Regional Price Parities
Illinois
Data Scientists
- Median
- $106,560
- p25
- $84,610
- p75
- $137,290
- p10
- $68,810
- p90
- $168,880
- COL index (BEA RPP)100 = US average
- 100.0
- Hiring velocity (180d)
- -50%
Washington
Data Scientists
- Median
- $163,350
- p25
- $105,240
- p75
- $208,320
- p10
- $79,930
- p90
- $220,040
- COL index (BEA RPP)100 = US average
- 107.0
- Hiring velocity (180d)
- -35%
BLS Occupational Employment and Wage Statistics, May 2025. Cost-of-living adjustment from BEA Regional Price Parities (overall index). Hiring velocity from DOL OFLC public disclosure data, recent 180 days vs prior. See methodology.