U S Government Of--post Offices, Hingham Oostburg, WI 53070 Phone : (920) 564-3041 Business Category Post Offices Government Offices & Public Schools United States Government--postal Service-u S, Hingham 2750 Main Ave Sheboygan, WI 53083 Phone : (920) 564-3041 Business Category Government Offices & Public Schools Post Office - Hingham N2750 Main St Hingham, WI 53031 Phone : (920) 564-3041 Post Office - Hingham Business Category Post Offices Toll-Free           (800) ASK-USPS