Manus Province is the smallest province in Papua New Guinea with a land area of 2,100 km², but with more than 220,000 km² of water. The capital of the province is Lorengau and the total population is 60,485 (2011 census).The province is made up of the Admiralty Islands (a group of 18 islands in the Bismarck Archipelago) and Wuvulu Island and nearby atolls in the west. The largest island in the group is Manus Island where Lorengau and an Australian immigration detention centre are located.