L1 users: 3,790 (2000 INALI). 30 monolinguals.
Oaxaca state: Santiago Chazumba municipality and town, San Pedro y San Pablo Tequixtepec; Puebla state: Petlalcingo, Santa Gertrudis Cosoltepec, Totoltepec de Guerrero and Zapotitlán villages.
75% scattered over a large area; most villages fewer than 15% can speak Mixtec. A large percentage of each village shifted to Spanish [spa]. Mainly older adults.