Melbourne is the capital of the Australian state of Victoria and the second-most populous city in Australia, after Sydney. Its name generally refers to a 9,993 km² metropolitan area known as Greater Melbourne, comprising an urban agglomeration o…Melbourne is the capital of the Australian state of Victoria and the second-most populous city in Australia, after Sydney. Its name generally refers to a 9,993 km² metropolitan area known as Greater Melbourne, comprising an urban agglomeration of 31 local municipalities, although the name is also used specifically for the local municipality of City of Melbourne based around its central business area.