Please post where you are getting your facts from.
US census bureau estimated by jan 2011 that there were about 700,000 or approximately 0.3% of us citizens identified as the opposite gender of their birth sex.
US census bureau estimated by jan 2016 that the were slightly over 1.4 million or approximately 0.6% of us citizens identified as the opposite gender of their birth sex.
There are currently 324,437,230 people living in the USA. As of 08/18/2016 there are 2,271,060 people KNOWN living people in the USA that identify as Transsexual.
This is just the people who are out on government record not including people who are just starting hormones and have not changed any government paperwork yet.
Transgender is a much larger group of individuals than the sub group transsexual. A transsexual is one who is actually making physical changes to their body to become their target gender including body chemistry for secondary sexual characteristics, redistribution of body fat in the proportions of their target gender. As well production of pheremones identical to their target gender.
A transgender person could be a transsexual, however can also be someone who is just non gender conforming, i.e. one who has made no physical changes to their body whatsoever and only changes the way they dress and act.
I don't know the exact statistics but in general there are more trans women than there are trans men. If we go by the one I know in person, lets say a ratio of FtM 1:4 MtF.
You also have to bare in mind, how many actually come out and other things. But it does seem FtM usually get ignored, they find it much easier to integrate into society and also organisations such as TERF (Trans Exclusionary Radical Feminists) simply view trans men as collateral damage while trans women are "misogynistic spies of the patriarchy".
Quite often when you think transgender, you think "man in a dress", you never even think of trans men. Fact is, there are fewer, not as easily noticed and not as heavily attacked (not to say attacks don't happen and they do suffer discrimination that is exclusively aimed at them which trans women do not suffer). Fact is though they are able to fly under the radar a lot easier though.
Statistically, there are more trans women than trans men.
One of my mates did a course in genetics and they explained how the Y chromosome is quite unstable in comparison to the X chromosome which is why conditions like this are more prevalent in males.