State comparison · 2025
Environmental Scientists and Specialists salary: District of Columbia vs Illinois
Environmental Scientists and Specialists in District of Columbia earn a median of $132,620. In Illinois, $81,590. After cost-of-living, the gap is 47.9% — not 62.5%.
Nominal pay gap
+62.5%
District of Columbia vs Illinois
COL-adjusted gap
+47.9%
After BEA Regional Price Parities
District of Columbia
Environmental Scientists and Specialists
- Median
- $132,620
- p25
- $98,410
- p75
- $161,470
- p10
- $78,270
- p90
- $185,220
- COL index (BEA RPP)100 = US average
- 109.9
- Hiring velocity (180d)
- -67%
Illinois
Environmental Scientists and Specialists
- Median
- $81,590
- p25
- $60,790
- p75
- $121,040
- p10
- $46,540
- p90
- $153,150
- COL index (BEA RPP)100 = US average
- 100.0
- Hiring velocity (180d)
- -67%
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.