Post Office – Armagh, Hamiltonsbawn – Opening Hours & Branch Details You’ll find Post Office easily accessible at 127 Annareagh Road, 4.47 miles east of the centre of Armagh (nearby St John’s Parish Church and Nc Engineering). The branch is an important addition to the locales of Hamiltonsbawn, Derrynaught, Drumman, Hamiltons Bawn, Carrowmoney, Rocks, Garvagh Hill and Macantrim. If you’d like to visit today (Friday), it’s open from 9:00 am – 5:30 pm. Please note the various sections on this page for specifics on Post Office Armagh, Hamiltonsbawn, including the open hours, place of business address, customer rating and more information.