🇲🇽 Tlahualilo is one of the 39 municipalities of Durango, in north-western Mexico. The municipal seat lies at Tlahualilo de Zaragoza. The municipality covers an area of 3,709.8 km². The municipality had 159 localities, the largest of which were: Tlahualilo de Zaragoza, El Lucero (Arcinas), classified as urban, and San Francisco de Horizonte (Horizonte), Jauja, Banco Nacional, and San Julio, classified as rural.
Tlahualilo has a population of over 22,244 people. Tlahualilo also forms part of the wider Durango state which has a population of over 654,876 people.