Where to apply and where to marry…. Once the license is issued, Michigan residents can marry anywhere in the state.Michigan law requires marriage applicants to complete the Affidavit for License to Marry. Note that the application for a marriage license is a sworn affidavit. The application process is a joint process between the Michigan Department of State and the County Clerk's Office. 1. (2) An affidavit or sworn statement may be substantially in the following form: SWORN STATEMENT OF MARY DOE. Once the affidavit is complete, and the 3 day waiting period has concluded, the license can be used anywhere in Michigan. This section shall not be considered to preclude the use of other notary forms. Applicants coming from out-of-state must apply for their license in the county in Michigan where the marriage is taking place. An affidavit of marriage is a legal document and a sworn statement submitted to the court or another institution, to verify that two people are married.