Post Office – Omagh, Drumlegagh – Opening Hours & Branch Details Post Office is easy to get to at 31 Drunlegagh Church Road, approximately a 8.53 mile distance north-west from the centre of Omagh. The branch serves the customers of Derryfallons, Dernaleck, Archill, Byturn, Annie Hill, Drumlegagh, Bellway and Aghasessy. If you’d like to drop by today (Friday), its hours of opening are from 9:00 am until 1:00 pm. Here, on this page, you may find more information about Post Office Omagh, Drumlegagh, including the open hours, local directions or telephone number.