Post Office – Londonderry, The Rock – Opening Hours & Branch Details You can find Post Office at 141C Strand Road, a 0.99 mile distance north-west of the centre of Londonderry (by Ulster University Magee Campus and Foyle And Londonderry College (Seniors)). This branch is an added feature to the locales of Ballymagroarty, Creggan, Bogside, Londonderry/derry, Caw, Brandywell, Rosemount and Hazelbank. Open hours today (Friday) are from 8:30 am – 5:30 pm. On this page, you can find information about Post Office Londonderry, The Rock, including the hours of business, address and product ranges.