Tlahualilo de Zaragoza is a city located in the northeastern part of the Mexican state of Durango. Tlahualilo of Zaragoza is the municipal seat of the Tlahualilo municipio. The city has 8,798 inhabitants and is part of the Comarca Lagunera metropolitan area which has a population totalling more than 912,000 inhabitants in 2005. The municipality has a population of 19,882 inhabitants and borders the state of Coahuila in the east, the municipality of Mapimí to the west and the city of Gómez Palacio to the south.
Coordinates: 26°07′N 103°27′W / 26.117°N 103.450°W