Manly Post Office Post office Postal service established by George Birch beside Willow Tree refreshment rooms on The Corso in April 1857, and operating at various locations within the commercial area since then. Milestone Opened 1857 {"name":"Opened","target":"","target_text":null,"date":{"#markup":"<span class='date'>1857<\/span>"},"date_start":"1857","date_end":"1857"} Type Post office {"name":"Post office","target":"","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null}