Applicants for a marriage license must pay a fee and fill out a form stating their names, ages, marital status, and intention to marry. Marriage applicants under the age of 18 should call the Register of Deeds office at 980-314-4951 for specific requirements.At Mecklenburg County Courthouse you have to have an appointment to get married there. I had to make my appointment 60 days out. And you must create your appointment at the courthouse before starting the marriage license application online. Find Local Rules and Forms that provide procedures and guidelines for courts in Mecklenburg County. Once a marriage license is obtained, you may be married immediately. No waiting period is required. To start the Marriage License application please fill out the required information below. Its county seat is Charlotte, the state's largest municipality.