When applying for a marriage license in Delaware it is important to keep in mind that there is a 24 hour waiting period and the license is only valid for 30 days. Make sure to plan ahead! Also, there is a price difference on marriage licenses for residents and non-residents. If you live in Delaware, the price of a marriage license is $50. If you do not reside in Delaware, the price of the marriage license is $100. Also, note that the Clerk’s offices only accept cash!