Post Office - Marysville 10110 Highway 3 Marysville, IN 47141 Phone : (812) 293-3124 Business Category Post Offices Toll-Free           (800) ASK-USPS United States Government--u S Postal Service, Marysville Branch 10110 Highway 3 Marysville, IN 47141 Phone : (812) 293-3124 Business Category Government Offices-Federal Government Offices & Public Schools