San Andrés Tianguistengo

Tianguistengo comes from Nahuatl and, according to PueblosAmérica, points to a spot "at the edge" of the tianguis, the market. The village, with 663 residents in 2020 (716 in 2010), sits at 2,370 metres on rolling hill country about 10 kilometres east of Actopan, and its water runs down to the Amajac river sub-basin. The climate is temperate and sub-humid, with summer rains and an annual mean around 13.6 °C; January is the coldest month and May the warmest.

The parish church of San Andrés is the village's church and has its own category on Wikimedia Commons. In 2020, 22% of the population identified as Indigenous and 8% spoke an Indigenous language; INEGI counts 168 occupied homes, almost all with electricity, and a high marginalisation rating.

Hills crowd in close: Cerro Corona (2,573 m) 1.4 km west, Cerro Grande (2,623 m) and Peña Larga (2,496 m) to the northwest, and El Alto, at 2,901 m, about 3 km south. Neighbouring communities include Fray Francisco (2.2 km northeast), Santa María Magdalena (3.3 km west) and San Jerónimo (3.8 km east). In Actopan, some 10 km away, stands the sixteenth-century Augustinian convent, already finished by the 1570s.