The Williams Institute

There are nearly 650,000 same-sex couples in the United States, of which approximately 114,100 are legally married and over 108,600 are in civil unions or registered domestic partnerships. This research brief summarizes the demographic characteristics of same-sex couples and compares them to different-sex couples. The analyses highlight trends and changes in the demographic diversity of same-sex couples and assess the degree to which similar changes are occurring among different-sex couples.