‘Married Same-Sex Couples in the U.S. on the 10th Anniversary of Obergefell’ by The Williams Institute

Using data from the American Community Survey and advanced statistical modeling, The Williams Institute estimated the number of couples currently married and examines their demographic and socioeconomic characteristics, finding that there are an estimated 823,000 married same-sex couples in the U.S. as of June 2025, more than double the number of married same-sex couples in June 2015 when Obergefell was decided. These couples are raising nearly 300,000 children. The percentage of married same-sex couples has increased over the past decade, with approximately 60% cohabitating same-sex couples being married today. Obergefell has had the most profound impact on the South, where the percentage of same-sex couples who are married increased most profoundly since 2015.