States allowing civil unions or domestic partnerships:
States with constitutional bans on same-sex marriage:
NOTE: Map represents when same-sex marriage and civil union laws take effect, not when they are approved or announced. Though the timeline refers to bans by state statute and constitutional amendment, the map of same-sex marriage bans only includes constitutional amendments and not state statutes.
Since the US Supreme Court issued its decisions on the federal Defense of Marriage Act and California's Proposition 8 in June 2013, several states' constitutional bans on same-sex marriage have been struck down as unconstitutional. Most of those rulings have been put on hold as the cases go through the appeals process.
Allows same-sex marriages
Constitutional bans on same-sex marriage
Part or all of constitutional ban struck down, decision not immediately in effect
Ban on same-sex marriage upheld by 6th US Circuit Court of Appeals panel
Select a state for news and history about gay marriage in that state.