Post Office – Carmarthen, Nantgaredig mobile service – Opening Hours & Branch Details Post Office is positioned on Station Road, about a 5.26 mile driving distance east of the centre of Carmarthen (near to Nantgaredig Primary School and Nantgarredig Intake Works). The branch is proud to serve customers within the areas of Llanfihangel Uwch-Gwili, Nantgaredig, Capel Gwyn, Llanegwad, Capel Dewi and Pontargothi. Unfortunately, it’s not open the entire day (Friday). This page will provide you with all the information you need on Post Office Carmarthen, Nantgaredig mobile service, including the working times, address info, email contact and more info.