According to the Bureau of Labor Statistics, the following 15 jobs account for more than 25 percent of total U.S. employment. For comparison purposes, the largest job retail sales employs 4.21 million people, or 3.2 percent of the total American work force. By contrast, a mere 660 people are employed as prosthodontists, 1,170 as geographers and 870 as radio operators nationally.

So what are these mega-professions that employ so many people? According to the BLS, the following jobs are America's most popular:

1. Retail salespeople: Per ... Read More »