The Marriage Department is open for in-person appearances (no appointment necessary). Couples MUST pre-register for a marriage license online via our website.Welcome to the Cuyahoga County Probate Court Marriage License Registration page. Registration is mandatory and will expedite the process of issuing a license. If you're an Ohio resident, apply for your marriage license in the county you live in, not the county in which you'll be getting married. Learn everything about what to write on cuyahoga county marriage license filled in with our comprehensive guide. For more information, contact the Cuyahoga County Treasurer's office, 216-443-2149 or call us at 216-491-1333 for a list of participating banks.