The District of Columbia has three and a half times more people who identify as trans than any State in the US, per head of the population.
A Williams Institute survey  found that 2.77% of the population of DC identified as trans – more than three and a half times as many as Hawaii, which (at 0.78%) had the highest proportion of trans people of all fifty States.
 Flores, A.R., Herman, J. L.; Gates, G. J. & Brown, T.N.T. (2016). How many people are lesbian, gay, bisexual, and transgender? Los Angeles, CA: The Williams Institute. [Link]