Hidalgo is one of the 38 municipalities of Coahuila, in north-eastern Mexico. The municipal seat lies at Hidalgo. The municipality covers an area of 1619.8 km<sup>2</sup> and is located on the international border between Mexico and the USA, there formed by the RÃÂo Bravo del Norte (Rio Grande), adjacent to the U.S. state of Texas.
As of 2010, the municipality had a total population of 1,852.
The largest localities (cities, towns, and villages) are: