440 (2000 INALI).
North Oaxaca, San Juan Bautista Valle Nacional; mainly San Mateo Yetla.
7 (Shifting).
71% intelligibility of Chiltepec [csa] (most similar), 70% of Palantla [cpa], 53% of Ozumacín [chz], 40% of Tepetotutla [cnt].
Also use Spanish [spa].
