United States Government--post Offices, Brussels 9671 State Highway 57 Brussels, WI 54204 Phone : (920) 825-1474 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools Post Office - Brussels S9671 State Highway 57 Brussels, WI 54204 Phone : (920) 825-1474 Post Office - Brussels Business Category Post Offices Toll-Free           (800) ASK-USPS