Municipalities with significant Sierra Otomi populations include the following (Dow 2005:236). Many of these municipalities also have Tepehua, Totonac, and Nahuatl speakers.
The phonemic inventory given below is based on the particular phonology of the Otomi de la Sierra dialect as documented by Voigtlander and Echegoyen (1985), phonemic inventories of other dialects vary slightly from that of Otomi de la Sierra.
Tones are usually not marked.