Post Office – Girvan, Colmonell Mobile Service – Opening Hours & Branch Details Post Office is found in a good place at 37 Main Street, approximately 7.64 miles south from the centre of Girvan. The branch serves patrons mainly from the neighborhoods of North Balloch, Pinmore, Barrhill, Lendalfoot, Moniaive, Colmonell and Daljarrock. Unfortunately, it won’t be open today (Friday). Read the information on this page for Post Office Girvan, Colmonell Mobile Service, including the operating times, local directions, direct telephone and other relevant info.