United States Government--u S Postal Service, Post Offices, Sparta Sparta, MO 65753 Phone : (417) 634-3898 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools Post Office - Sparta 7060 State Highway 14 E Sparta, MO 65753 Phone : (417) 634-3898 Post Office - Sparta Business Category Post Offices Toll-Free           (800) ASK-USPS