Automated Postal Center - Elm Grove 10718 Highway 71 Elm Grove, LA 71051 Phone : (318) 742-3620 Business Category Automated Postal Centers Toll-Free           (800) ASK-USPS Post Office - Elm Grove 10718 Highway 71 Elm Grove, LA 71051 Phone : (318) 742-3620 Business Category Post Offices Toll-Free           (800) ASK-USPS