Marriage License in the State of New Jersey, NJ. When you are married, you must pay a fee for a marriage license. The marriage license fee in New Jersey is $28. The legal marriage age is 18 years old. You can marry someone as young as 16 with permission from a judge. Marrying someone younger than that without the judge's approval is illegal. The license is valid for 60 days. During this time, you can use it to get married at any city hall or county courthouse in the state. You cannot use it to get married at home, by a priest, etc. You can only be married by a licensed minister or priest of an approved church or temple. In New Jersey, these people are called "ministers of the gospel." In New Jersey, there is no requirement that you attend church or hold any religious beliefs to be granted a marriage license. Any person who has been baptized in the name of Jesus Christ can perform marriages at any city hall in the state. However, they will need to take some steps to ensure that all parties involved are legally able to marry one another. Permits can only be performed by individuals who have been given authority by their local government to act as ministers. These people are called "clergymen" or "marriage commissioners."