This ended up with the consolidation of a number of communities into two entities called "San Salvador Tecamachalco" and "La Magdalena Atlicpac" around 1770-1773, now the neighborhoods of Atenantitlan and Tejolote.

In 1882, the first railroad connecting the area and Mexico City was built, beginning Los Reyes' close economic ties with the metropolis even though the original town itself would not join the municipality until 1889.

[1] The municipality was founded in 1875 by President Sebastián Lerdo de Tejada, furthering a process of consolidation of the area that had begun in the prior century.

[1] The municipality covers a total surface area of 26.71 square kilometers (10.31 sq mi) and, in the year 2010 census, reported a population of 253,845.

[2] It borders with Chicoloapan, Chimalhuacán, Ixtapaluca, Valle de Chalco Solidaridad, Nezahualcoyotl and the Distrito Federal, specifically with the borough of Iztapalapa[1] The municipality consists of 18 localities (15 urban and 3 rural), of which its municipal seat, Los Reyes Acaquilpan, also known as Los Reyes La Paz, which had a 2010 census population of 85,359 inhabitants, is the largest.