The most valuable college majors, ranked
Adrian D. Garcia
Bankrate
Sept 10, 2018

This article shows the 5 most valuable and 5 least valuable college majors. Salary and unemployment rates are shown. While the results are based on recent history and are not necessarily predictive of future salary and employment trends (which can change based on supply and demand)... the lists are interesting nonetheless. It is possible that the least valuable majors may be rather constant... while shifts in which majors are most valuable may show more fluctuation.
Originally Posted by article
only 22 percent of actuarial science majors held a master’s degree or doctoral degree, suggesting the majority of graduates did not need to take on more schooling — which often comes with more debt — to find employment.
The Bankrate 2017 list of 10 most valuable college majors here.

Other sources of information include:
US Bureau of Labor Statistics Occupational Employment Statistics (OES)
US Bureau of Labor Statistics Occupational Outlook Handbook OOH