Legal
Allowed with requirements
Banned with exceptions1
Statute bans marriage1
Criminal offense1
1 Some states recognize marriages performed elsewhere, while other states do not.
The legal status of first cousin marriage varies considerably from one U.S. state to another, ranging from being legal in some states to being a criminal offense in others. It is illegal or largely illegal in 32 states and legal or largely legal in 18. However, even in the states where it is legal, the practice is not widespread. (See Incidence.)