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. 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 ().
LGBT rights in Idaho
By 2018, Idaho was one of the only four U.S. states (Kansas, Ohio and Tennessee being the other three) which didn't allow transgender people to alter their gender marker on their birth certificates. However, in March 2018, a federal judge ruled this unconstitutional. From April 6 onwards, transgender people in Idaho have been allowed to change their birth certificates to accurately reflect their gender identity. The ruling was labelled "a huge win" by transgender activists, who in 2017 had filed a lawsuit challenging the state law. While arguing that transgender people "already face disproportionately high levels of discrimination", the judge asserted that such discrepancies "can create risks to the health and safety of transgender people" and that said discrepancies were "archaic, unjust and discriminatory".