 In all but four states, couples are allowed to marry at a younger age with parental consent or with judicial authorisation, with the minimum marriage age, when all exemptions are taken into account, ranging from 14 to 17, while in 10 states there is no statutory minimum age when all exemptions are taken into account.The states which ban marriage under 18 completely are Delaware, New Jersey, Minnesota and Pennsylvania which no longer allow "exceptional circumstances" that permit underage marriages.American Samoa also does not allow underage marriages.