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 marketing
However, some national governments have started to publish data that include demographics of sexual orientation from census results. In the 2000 United States Census, two questions were asked that allowed same-sex partnerships to be counted, and the Census Bureau reported that there were more than 658,000 same-sex couples heading households in the United States. In 2013, the American Marketing Association reported that 3.5% of adults in the United States identified as lesbian, gay, or bisexual and .3% of adults as transgender. At that time, the LGBT consumer market was estimated to have an overall buying power of more than $835 billion.