The first ever count of India's transgender population has found nearly 500,000 who were prepared to say they were transgender in filling out census papers – though activists say the real number may be far higher
02 JUNE 2014 | BY ANDREW POTTS
490,000 people listed themselves as 'third gender' or transgender in India's most recent census – the first time the Indian Government has sought to ask how many people identify as such.
http://www.gaystarnews.com/article/indian-census-counts-transgender-people-first-time-finds-half-million020614
500 thousand / 1.23 billion = .04 % or about 1 in 2500. I think that's still a massive undercount.
Well I think a significant portion wouldn't want to list themselves as such and I bet a significantly larger portion on top of that will still be in denial