Apatzingán (in full, Apatzingán de la Constitución) is a city and municipal seat of the municipality of Apatzingán in the west-central region of the Mexican state of Michoacán.
The Municipality of Apatzingán is located in the Tierra Caliente Valley. It has an area of 1,656.67 km2 (639.64 sq mi), and reported a population of 99,010 (2010).
The city of Apatzingán is the sixth-largest in Michoacán (behind Morelia, Uruapan, Zamora, Lázaro Cárdenas, and Zitacuaro), with a 2015 census population of 128,250 persons. The major Sierra Madre del Sur mountain range and the municipality of Coalcomán de Vázquez Pallares are to the west.
