Post Office - Marquette 126 S Lyon St Marquette, WI 53947 Phone : (920) 394-3571 Business Category Post Offices Toll-Free           (800) ASK-USPS United States Postal Service , Phone : (920) 394-3571 United States Postal Service Business Category United States Government--post Offices, Marquette 126 S Lyon Kingston, WI 53939 Phone : (920) 394-3571 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools