Grygla Post Office Grygla Post Office OFFICE HOURS:LobbyMonday - Friday8:10 am - 5:10 pmSaturday8:10 am - 2:10 pmWindowMonday - Friday9:30 am - 5:00 pmLunch11:30 am - 12:30 pmSaturday9:30 am - 10:15 am PO Box 9998Grygla, MN 56727 218-294-6141 www.usps.com