2017–2022 :Between 2017 and 2022, the district covered 276 precincts in the municipality of Torreón, with the remainder of the municipality assigned to the 6th district. The head town was at Torreón.
2005–2017 :Under the 2005 districting scheme, the district covered the
municipalities of
Matamoros,
Parras,
Viesca and 142 precincts in the southern half of the municipality of Torreón. The head town was the city of Torreón.
1996–2005 :Under the 1996 scheme, the district covered the north and east of the city of Torreón, the north, east and south of the surrounding municipality, and the whole of the municipalities of Matamoros and Viesca. ==Deputies returned to Congress ==