21. Illinois
Annual median wage: $84,610
Rank by annual median wage: 21
Job growth: 15.6%
Rank by job growth: 27
Cost of living index: 95.5
Rank by cost of living index: 21
Average score: 23
In Illinois, environmental engineers can expect salary close to the national average. In terms of costs of living the state falls in the middle, while job growth of 15.6% accounts for 60 job openings per year.