As of 2020, based on information from Northeastern University (https://bachelors-completion.northeastern.edu/news/average-salary-by-education-level/)
Less than a high school diploma: $32,565
High school diploma: $42,081
Some college but no degree: $46,755
Associate degree: $50,093
Bachelor’s degree: $69,381
Master’s degree: $81,867
Doctorate degree: $99,290
Professional degree: $100,060
Also bare in mind that this is for ALL majors, not exclusively STEM majors. So you should expect that the median salaries for Engineering Majors goes up.