Post Office – Perth, Stanley – Opening Hours & Branch Details Post Office sits at 22 Percy Street, approximately 5.99 miles north from the centre of Perth (by Stanley Primary School). This branch is pleased to serve customers within the areas of Guildtown, Stanley, Ardeblae, Gowrie, Campsie and Harrietfield. If you would like to visit today (Friday), its business times are 7:00 am until 10:00 pm. Please review this page for the specifics on Post Office Perth, Stanley, including the working hours, address, direct contact number and further information.