In this case"indigenous to Mexico". People indigenous to Mexico are called Mexicans. *At least in Mexico they mix up"indÃgena" (indigenous) with"indio" (Indian), maybe because they both share the first four letters ("indi-"), but I don't know if this happens in other countries as well. read more
According to the National Commission for the Development of the Indigenous Peoples (CDI), there were 25,694,928 indigenous people reported in Mexico in 2015, which constitutes 21.5% of the population of Mexico. read more