Casas Grandes
Between 1996 and 2005, the First District's territory was in the north and north-east of the state, covering the municipalities of Ahumada, Ascensión, Buenaventura, Casas Grandes, Galeana, Gómez Farías, Guadalupe, Ignacio Zaragoza, Janos, Madera, Matachí, Namiquipa, Nuevo Casas Grandes, Práxedis G. Guerrero and Temósachi; it was centred on the city of Nuevo Casas Grandes.