Post Office – Dungannon, Blackwatertown – Opening Hours & Branch Details Post Office is found in a convenient position at 59 Main Street, about a 7.07 mile drive south of the centre of Dungannon (by Alexander Mills and St Patrick’s Church Clonfeacle). This branch is situated in a convenient location for customers from Drumlee, Tullydowey, Stangmore (Magee), Tullylearn, Clonfeacle, Benburb, Derryoghill and Mullyleggan. Its hours of opening are 9:00 am until 5:30 pm today (Friday). On this page you can find all the pertinent information about Post Office Dungannon, Blackwatertown, including the open hours, local map and phone info.