https://en.wikipedia.org/wiki/Educational_attainment_in_the_...
0.8% of Americans over 25 are earning minimum wage.
http://www.forbes.com/sites/jeffreydorfman/2014/01/30/almost...
That leaves 70% of American adults do not have college degrees and are earning above minimum wage. Of course, depending on how one defines things those numbers can go up and down, but it's not a stretch to say that most workers do not have college degrees and earn above minimum wage.
One last observation - starting your own business does not require a college degree. (Probably the most famous of those is Microsoft, and Microsoft has hired programmers without degrees.)