Conversation so far:
How many indigenous peoples are there in Mexico?
According to the National Commission for the Development of the Indigenous Peoples, there were 25,694,928 indigenous people reported in Mexico in 2015,
How many different groups of indigenous peoples are included in the statistics for the number of indigenous people reported in Mexico in 2015?
The category of indigenous can be defined narrowly according to linguistic criteria including only persons that speak one of Mexico's 89 indigenous languages.

Question: In what part of Mexico do most indigenous peoples live?
Self-contained rewrite: In what part of Mexico do most indigenous peoples live?