Approximately 0.3% of adults in the U.S. are married to a same-sex spouse, and another 0.5% identify as being in a same-sex domestic partnership. In examining the total population of 243 million U.S. adults, these survey estimates suggest nearly 2 million adults are part of a same-sex couple, of whom 780,000 are married. CONT.
Gary J. Gates & Frank Newport, Gallup