Passport Application Services - Marysville 202 N Main St Marysville, OH 43040 Phone : (937) 642-1961 Business Category Passport Application Services Toll-Free           (800) ASK-USPS Fax           (937) 642-2028 Post Office - Marysville 202 N Main St Marysville, OH 43040 Phone : (937) 642-1961 Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (937) 642-2028