How Many

Various studies have estimated that between 4% and 10% of populations are homosexual,

It is always difficult to determine sexual minorities through surveys because of the complexities of self-identification, definitions, survey methodologies and stigmas.

In Britain, two studies were conducted by the National Survey of Sexual Attitudes and Lifestyles (NATSAL), one in 1989-90 of 19,000 people and another in 1999-2001 of 11,000 people found detailed results about sexual experiences and same-sex couples.

Studies by Kinsey in 1948 and Janus in 1993 have found bisexuals to represent between 22% to 37% of the population, though identifying them is quite difficult. 

Bisexuals and transgender individuals have not yet been identified as distinct markets by marketers, so little research is available specifically on them, and few media serve these two groups.