How many troops were in a US Army division in World War 2?

It depends on what kind of division; i.e. infantry, armored, etc. A US Army Infantry Division had 687 Officers, 42 Warrant Officers & 12,959 Enlisted Men in its Table of Organization during WW 2. An Armored Division had 558 Officers, 51 Warrant Officers & 10,001 Enlisted Men in its Table of Organization.