Post Office – Ammanford, Glanamman – Opening Hours & Branch Details Post Office is currently positioned on Cwmamman Road, a 2.99 mile driving distance east from the centre of Ammanford (near Gelli Werdd Recreation Park and Glanaman Square). The branch primarily serves people from the locales of Llandybie, Brynamman, Pentre Gwenlais, Gwaun-Cae-Gurwen, Garnant, Glanamman and Twyn. Today (Friday), service starts at 6:00 am and continues until 10:00 pm. This page includes operating times, address details or direct phone for Post Office Ammanford, Glanamman.