List of US Post Office Stores in Hattiesburg, MS Outlet Note Regular Brands US Post Office Mississippi Hattiesburg Rating 4.5 based on 76 votes Official Website https://www.usps.com/ Products Postal Service NameAddressPhone Name/Address/Phone US Post Office outlet - Hattiesburg 115 W Pine St (601) 544-8711 US Post Office outlet - Hattiesburg 2490 25th St (601) 558-2246 US Post Office outlet - Hattiesburg 118 College Dr (800) 275-8777 US Post Office outlet - Hattiesburg 220 S 40th Ave (601) 271-7000 People Also Viewed