Post Office – Hallin – Opening Hours & Branch Details Visit your local Post Office branch on Greenbank, 0.62 miles north-west of the centre of Hallin (close to Skyskins Commercial and Knockbreck Primary School). This branch is situated in a convenient location to serve the patrons of Upper Halistra, Lower Halistra, Edgehill, Port Na Cagain, Dunhallin, Halistra, Gillen and Hallin Town Centre. It will be closed the whole day (Friday). Read the specifics on this page for Post Office Hallin, including the working hours, place of business address, direct phone and further significant details.