Homicide of all sorts came in at number 16 in leading causes of death in the entire population, in 2011, firearms accounting for 11,100 or so. But... If you tease the data a little bit, homicide is 3rd or 4th leading cause of death up to age 34, comparable to suicide, ahead of cancer, and only clearly behind unintentional injury, (ie accidents, I suppose,) compared to which rate it is about a third. This will get you to the site:
http://webappa.cdc.gov/sasweb/ncipc/leadcaus10_us.html About 4/5ths of these homicides are gun related. So for that age group at least, gun control advocates have an issue.