Its seat is the city of Baltasar Brum.

The municipality is located in the southwest area of the Artigas Department.

The municipality of Baltasar Brum was created by Law N° 18653 of 15 March 2010, in compliance with the provisions of the Law N° 18567, that provided for the establishment of municipalities in all of the settlements with 2000 or more inhabitants.

[3][4][5] The only populated place part of this municipality is Baltasar Brum.

The authority of the municipality is the Municipal Council, integrated by the Mayor (who presides it) and four Councilors.