Acuña is one of the 38 municipalities of Coahuila, in north-eastern Mexico. The municipal seat lies at Ciudad Acuña, which contained over 98% of the municipality's population in 2010. The municipality covers an area of 11,487.7 km2 and is located on the international border between Mexico and the USA, here formed by the Río Bravo del Norte (Rio Grande), adjacent to the U.S. state of Texas.

In 2015, the municipality had a total population of 181,426 inhabitants. Acuña is currently the fastest growing city in Mexico. ,"Censo de Población y Vivienda 2010: Acuña, Coahuila de Zaragoza," accessed November 6, 2014

Towns and villages

The largest localities (cities, towns, and villages) are: Name 2010 Census Population Ciudad Acuña 134,233 Las Cuevas 399 Calles 373 Las Torres 274 Balcones 263 Total Municipality 136,755

Adjacent municipalities and counties

Jiménez Municipality - southeast Zaragoza Municipality - south Múzquiz Municipality - south Ocampo Municipality - southwest Brewster County, Texas - northwest Terrell County, Texas - north Val Verde County, Texas - northeast

References