How many trans-gendered people are in the USA?
Transgender
One effort to quantify the population gave a "rough estimate" that 0.3 percent of adults in the US are transgender, overlapping to an unknown degree with the estimated 3.5 percent of US adults (1-in-30) who identify as LGBT.[128][129] More recent studies released in 2016 estimate the proportion of Americans who identify as transgender at 0.5 to 0.6%. This would put the total number of transgender Americans at approximately 1.4 million adults (as of 2016).[130][131][132][133]
Legal recognition of intersex people
US organization Intersex Campaign for Equality is pursuing third sex classifications for non-binary intersex people, including through a federal court case. On November 22, 2016, the United States District Court for the District of Colorado ruled in favor of Navy veteran Dana Zzyym, associate director of Intersex Campaign for Equality, stating that the State Department violated federal law in denying Zzyym a passport because they did not select male or female as their gender. On September 26, 2016, intersex California resident Sara Kelly Keenan became the second person in the United States to legally change her gender to non-binary. In December 2016, Keenan received a birth certificate with an 'Intersex' sex marker from New York City. Press coverage also disclosed that Ohio issued a birth certificate with a sex marker of 'hermaphrodite' in 2012.