Santiago Yucuyachi

Santiago Yucuyachi is a town and municipality in Oaxaca in south-western Mexico. The municipality covers an area of 90.58 km². It is part of the Silacayoapam District in the Mixteca Region.

Demography
As of 2005, the municipality had a total population of 742.

The population is largely indigenous (62.16%) and 34.91% speak an indigenous language.