Post Office – Ballymoney, Dervock – Opening Hours & Branch Details Visit Post Office at 10 – 12 Carncullagh Road, approximately a 4.12 mile drive north-east from the centre of Ballymoney (nearby Dervock Riverside Park and Paddys Park Playing Fields). The branch mainly provides service to patrons from the districts of Carncullagh Lower, Aghancrossy, Urbal, Ballyratahan Lower, Knockanboy, Carnaff, Dervock and Ballyratahan Upper. If you’d like to drop by today (Friday), its hours of opening are from 9:00 am to 5:30 pm. On this page you’ll find all the information about Post Office Ballymoney, Dervock, including the open hours, branch address or email contact.