Post Office – Newtownstewart – Opening Hours & Branch Details Post Office sits at 16-18 Main Street, about a 0.14 mile driving distance north-east from the centre of Newtownstewart (not far from Saint Eugene’s (Rc) and Glenock Graveyard). The branch mainly provides service to people from the locales of Newtown Steward, Middle Deer Park, Croshballinree, Newtownstewart Town Centre, Grange, Moyle Glebe, Upper Or New Deer Park and Moyle. If you plan to swing by today (Friday), its working times are from 7:30 am – 10:00 pm. This page includes information on Post Office Newtownstewart, including the business times, location particulars or customer reviews.