U S Government Offices--bureau Of Land Management Pompeys Pillar, Pompeys Pillar Pompeys Pillar, MT 59064 Phone : (406) 875-2145 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Pompeys Pillar 3519 2nd St S Pompeys Pillar, MT 59064 Phone : (406) 875-2145 Post Office - Pompeys Pillar Business Category Post Offices Toll-Free           (800) ASK-USPS U S Government Offices--post Offices, Pompeys Pillar Pompeys Pillar, MT 59064 Phone : (406) 875-2145 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools