In Papua New Guinea: "Western Province between Ok Birim and Ok Tedi rivers, east of Ok Tedi to main road linking Kiunga and Tabubil, and north to the main mountain range." In Indonesia: "Papua Province, border area."

In Indonesia: Papua province, unknown villages. In Papua New Guinea: Ninggirum proper is spoken in Garandimok, Tamaro, Tikam, Wombon, BIkim, Tengkim, Minipon, Hukim, Tiongtau, Bwakim, Tarakbits, Detau, Bankim, Wogman, Wuwungo, Kwakwi, Iongtau, Twinkwi, Kolebon, Bumbin, Ogun, and Butipkawok villages; Kasuwa dialect is spoken in Irimkwi, Savakbon, Ambare, Deikwi, Sawanam, Kaiumguin, Tundenghiatkwi, Kumguit, Derongo, Bankim No. 1, Duombonkim, Mongolavuram, Wurimkawatgo, Haidauwogam, Ogun, and Butipkawok villages; Daupka dialect is spoken in Boliwogam, Oktidetau, and Nioksikwi villages.