Prehispanic history Vestiges of
Olmec,
Chichimeca, and
Tlahuica Prehispanic human settlements have been found in the area that includes modern Tetecals. It is evident that there were settlements of different sizes and that it was an important place of passage between the manors of Coatlán and Mazatepec.
Colonial history Tetecala was founded between 1521 and 1583 when it first appears on a map. By 1594 it was called
San Francisco de Tetecala and it was an important agricultural center. Cuautitla was founded about this time. By 1746, Tetecala and the surrounding area had 266 families of "Indians" and 32 of "Spaniards and Mestizos", as well as some of "Mulatos." Eighty years later, the population had increased to 4,040 inhabitants that were distributed in the town of Tetecala, five haciendas, and ten ranches. By Royal Decree of December 4, 1786, the Municipality of Tetecala corresponded to the State of Mexico.
21st Century The Escuela de Estudios Superiores de Tetecala (School of Higher Education of Tetecala), affiliated with the
Morelos State University opened in August 2016 in
Mazatepec. The initial programs were in nursing and nutrition; a program for Rural Surgeons opened in January 2018. The school had 208 students; the rector of the UAEM was Gustavo Urquiza Beltrán, and the first director of the school in Tetecala was Miriam Tapia. Six people died during the
September 19, 2017 earthquake. The state of Morelos reported 209 cases and 28 deaths due to the
COVID-19 pandemic in Mexico as of April 27, 2020; two cases were reported in Tetecala. Schools and many businesses were closed from mid March until June 1. On July 2, Tetecala reported 11 infections and three deaths from the virus; the reopening of the state was pushed back until at least June 13. Tetecala reported 13 cases, 13 recuperations, but no deaths from the virus as of August 31. Twenty-two cases were reported on December 27, 2020. ==Tourism and attractions==