The Transgender Community encompasses a fairly broad base of individuals such as Transsexuals, Drag Queens, Drag Kings, Transvestites,Crossdressers and Gender Queer people.
But for the purposes of clearity in this case the term Transgender or Transexual is used in reference to a person who is in the process of or has changed their physical gender from that of their birth gender.
In this situation the numbers of individuals who are considered Transgendered is actually small. As of 2003 the estimates were approximately 10,000 to 12,000 and one study put the number closer to 30,000 transgendered women living and going about their daily lives. The estimates were approximately 1 in every 11,900 males to female and 1 in every 30,000 females to male. Today researchers think those numbers are even higher at approximately 1% of all Americans.
The difficulty is in really knowing just how many Transexuals there are.
One issue and a valid one is privacy, another is that a fairly large number of Transgenders go out of the country for their surgeries because of the easier access to services and the lower cost but with the quality generally found in the US (HIPAA). The two most popular countries are Thailand and Canada. Along with the fact that many just want to live their lives as their new gender.
These combined circumstances makes it all but impossible to know just how many transgenders there are in our society although those of us within the community know that in fact the numbers are increasing because of the slow but steady acceptance within society. The internet has been the biggest influence on the acceptance and growth of knowledge about transexualism.