[classicman]

The most widely accepted statistic is that 1 in ever 10 individuals is LGB; however research shows that the number may be more like 1 in 20.

A recent government survey found that 4 percent of adults aged 18-45 identified as 'homosexual' or 'bisexual.' A similar proportion of voters identify as GLB. If you define gay as having same-sex attractions or behaviors, you do get higher proportions that are a bit closer to the one in ten figure."

not that it matters...
Then another ...

Whether increased acceptance of homosexuality has led to an upsurge in the number of positive media portrayals of gay characters or vice versa, one result seems to be that Americans now tend to overestimate the gay population in America. While most expert estimates place America's homosexual population at 10% or less, Americans tend to guess that the number is higher, around 20%.