Union Pacific Railroad--post Offices, Truxton Truxton, MO 63381 Phone : (636) 597-3010 Business Category Railroads Line-Haul Operating Post Offices Railroads Post Office - Truxton 199 Main St Truxton, MO 63381 Phone : (636) 597-3010 Business Category Post Offices Toll-Free           (800) ASK-USPS United States Government--post Offices, Truxton Truxton, MO 63381 Phone : (636) 597-3010 Business Category Government Offices-Federal Post Offices National Security Recruiting Us Armed Forces Government Offices & Public Schools