Post Office – Girvan, Ballantrae – Opening Hours & Branch Details Post Office is found at 38B Main Street, about 11.32 miles south-west of the centre of Girvan (adjacent to A77 / Main Street). This branch serves the customers of Lendalfoot, Ballantrae, North Balloch, Smyrton, Colmonell, Balkissock and Daljarrock. Drop by today (Friday) from 9:00 am until 5:30 pm. On this page, you will find hours of opening, address description, direct number and additional information about Post Office Girvan, Ballantrae.