Post Office – Armagh, Barrack Street – Opening Hours & Branch Details Post Office can be found at 28 Barrack Street, a 0.32 mile distance south-east from the centre of Armagh (close to The Mall Park and The Mall Shopping Centre). This branch is happy to serve customers within the areas of Armagh City Centre, Mullynure, Drumarg, Drumadd, Corporation, Ballynahone More, Parkmore and Milford. It is open 8:30 am until 5:30 pm today (Friday). Please see the various sections on this page for specifics on Post Office Armagh, Barrack Street, including the business times, navigation, direct phone and further information about the branch.