What percentage of gay people have AIDS?

Firstly, you'd have to determine how many gay people there are. We don't really know how many there are. BUT, you can estimate. SO, if you say that between 5 and 20 percent of the American populace is composed of gay males, THEN you say that there's about 300,000,000 people in the U.S., AND there's about 140,000,000 males, THEN there's between 7,000,000 and, at the most, 28,000,000 gay men in the U.S.

The CDC did a study on MSM, gay men, that said 1 in 5, 19%, of participants were HIV+. I don't believe that this represents the whole of gays because of how the study was done. I heard somewhere else that about one percent are HIV+. So, that leaves you with a huge margin. Between 1-19% of gays are HIV+, or between 70,000 and 5,600,000 gays. (NOTE: This is mainly speculation and has vary wide margin of error. I answered this to kill time mainly.)

Sources: http://www.census.gov/prod/2003pubs/p20-544.pdf, http://www.webmd.com/hiv-aids/news/20100923/1-in-5-gay-bi-men-have-hiv-nearly-half-dont-know, and my brain