The APY is one of 74 local government areas of South Australia. It includes a number of settlement communities, as well as over 50 family outstations (referred to as "homelands"). Most of the settlements are located in the far north. The administrative centre for the APY is Umuwa. The four largest towns, as recorded in the 2006 census are Iwantja (339 people), Pukatja (332), Amata (319) and Mimili (303). The only non-indigenous community is the opal-mining town of Mintabie (250 people). The other settlement communities are: Kaltjiti, Watarru, Kanpi, Nyapari, Kalka, Pipalyatjara, Yunyarinyi and Watinuma.