Gay couples are marrying in Minnesota and Rhode Island -- the 12th and 13th states to allow gay marriage, along with Washington, D.C.
Minnesota law allowed gay marriages to begin Thursday, and the first such ceremony took place at Minneapolis City Hall. Other same-sex wedding ceremonies followed across the state.
Rhode Island officials also started issuing marriage licenses to gay couples when offices opened up early Thursday.
The national gay rights group Freedom to Marry estimates that just under a third of the U.S. population lives in places that allow gay marriage or honor out-of-state marriages of same-sex couples.