L1 users: 410 (2011 census).
Northwest Territories: Beaufort sea, Mackensie river mouth east into Nunavut; Victoria Island area, Kugluktuk, Umingmatok, Bathurst Inlet, and Iquluktuuttraq communities, east to King William Island, and Boothian and Melville peninsula settlements; Hudson Bay northwest coast.
2 (Provincial). Statutory provincial working language in NWT (1988, NWT Official Languages Act, Chapter 56 (Supplemented), Section 4), restricted official use.
Natsilingmiutut (Natsilik, Netsilik, Netsilik Inuit), Siglitun (Inuvialuktun, Siglit). A member of macrolanguage Inuktitut [iku].