The Geelong metropolitan area is the second most populated area in the Australian state of Victoria and the largest non-capital city. Located south-west of the state capital, Melbourne, the port city is situated around Corio Bay and the Barwon River. The metropolitan area runs from the plains of Lara in the north to the rolling hills of Waurn Ponds to the south, with the bay to the east and hills to the west, an area with an estimated population of 160,891 people. It is the administrative centre for the City of Greater Geelong municipality which covers the urban and surrounding areas and is home to over 181,000 people. An inhabitant of Geelong has been known as a Geelongite, or a Pivotonian, in the past.Geelong was named in 1827, with the name derived from the local Wathaurong Aboriginal name for the region, Jillong, thought to mean "land" or "cliffs". The area was first surveyed in 1838, three weeks after Melbourne. The Post Office was open by June 1840 (the second to open in the Port Phillip District). The first woolstore was erected in this period and it became the port for the wool industry of the Western District. During the gold rush Geelong experienced a brief boom as the main port to the rich goldfields of the Ballarat district. The city then diversified into manufacturing and during the 1860s it became one of the largest manufacturing centres in Australia with its wool mills, ropeworks, and paper mills.