Santa María NduayacoSanta María Nduayaco is a town and municipality in Oaxaca in south-western Mexico. The municipality covers an area of km2. It is part of the Teposcolula District in the center of the Mixteca Region.DemographicsAs of the 2010 census, the town, which serves as the municipal seat, had a population of 57 inhabitants, while the municipality had a total population of 550 inhabitants. Its municipal seat is the second-smallest in all of Mexico.