12. Washington
IM Score: 23
Annual median wage: $135,480
Cost of living index: 107.1
The next state on our list of best states for petroleum engineers has a similar problem like Alaska. The wages are among the highest, but so is the cost of living index. Washington has 4.7% unemployment rate, but there will be 10 average annual job openings for petroleum engineers. Also, in 2024, there will be 180 those employed within the occupation compared to 170 in 2014.