Santiago Yolomécatl is a Municipality of 2021 inhabitants, placed in the State of Oaxaca, with a fertility rate of 2.57 children per woman. 6.88% of the population migrated from outside the State of Oaxaca. 8.86% of the population is indigenous, 4.55% of the inhabitants speak one indigenous language, and 0.00% speak that indigenous language, but not Spanish.89.86% of the inhabitants of Santiago Yolomécatl are Catholic, 51.85% are economically active and, within this active population, 99.11% are employed. Additionally, 92.05% of the dwellings have piped water and 2.52% have Internet access.
List of Towns, communities and towns in the Municipality of Santiago Yolomécatl: