Post Office – Omagh, Plumbridge – Opening Hours & Branch Details Post Office is situated within easy reach at 23 Main Street, about 12.01 miles north of the centre of Omagh. This branch looks forward to serving the patrons of Aghalane, Lisnacreaght, Dergbrough, Plumbridge, Meenachar, Letterbrat, Lower Lisnacreaght and Glencoppogagh. Today (Friday), business times start at 7:00 am and continue until 9:30 pm. Refer to this page for the specifics on Post Office Omagh, Plumbridge, including the working hours, local navigation, direct number and further significant information.