Post Office – Omagh, Carrickmore – Opening Hours & Branch Details You’ll find Post Office at 1A Main Street, about 10.20 miles east of the centre of Omagh (a few minutes walk from Tyrone Garden of Remembrance). The branch provides service mainly to the areas of Creggandevesky, Aghnagreggan, Mullanmore, Athenree, Old Church Yard, Mullenbeg, Carrickmore and Aghagogan. It’s open from 7:00 am until 11:00 pm today (Friday). Read the information on this page for Post Office Omagh, Carrickmore, including the business times, branch address details, telephone number and other beneficial info.