171,000 (2010 census). 7,600 monolinguals. Ethnic population: 266,000 (Ichihashi-Nakayama, Yumitani, and Yamamoto 2007).
Northeast Arizona, northwest New Mexico, southeast Utah; a few in Colorado.
Vigorous in some families. L1 speakers among first graders are 30% versus 90% in 1968 (1998). Immersion program in several schools; formally taught at several universities (Golla 2007). Wide range of functions.
Ethnonym: Diné, preferred.