Taplan (postcode 5333) is a town in the Murray Mallee region of South Australia near the border with Victoria. Taplan is an aboriginal word meaning grass tree. The town was laid out by Henry George in 1914. The railway from Adelaide to Paringa was laid past the site of the future township in 1913, 183.25 miles (294.91 km) by rail from Adelaide. The Taplan Post Office was open from 1 July 1914 to 14 May 1982.