 At the 2016 census, Mount Macedon had a population of and is best known for its collection of 19th-century gardens and associated extravagant large homes, which is considered to be one of the most important such collections in Australia.Mount Macedon township was largely established by Melbourne's wealthy elite in the post-gold rush era of the mid to late 19th century who used it as a summer retreat.The post office opened on 18 July 1870, known as Upper Macedon until 1879 and Macedon Upper until 1936.