[3] The following are the towns that made up the commune as with their respective populations (according to the 2002 Census): As a commune, Yungay is a third-level administrative division of Chile administered by a municipal council, headed by an alcalde who is directly elected every four years.

For the years 2016-2020, the alcalde is Rafael Cifuentes Rodríguez (PS), and the council members are:[1][2][4] Within the electoral divisions of Chile, Yungay (together with Chillán, Coihueco, Pinto, San Ignacio, Chile, El Carmen, Pemuco and Chillán Viejo) is represented in the Chamber of Deputies as a part of the 41st electoral district.

The Yungay Commune is located on the eastern borders of the region, thus it contains parts of the Cordillera of the Andes, where the altitude reaches between 150 and 2000 meters above sea level.

Generally, the land is devoted to agricultural[5] purposes, principally the growth of California Pine, wheat, oats, or lentils; or for livestock grazing.

In the present day, the library has grown and offers many new services such as a computer lab that serves many students (from one of the several high schools within the area) who don’t have access to the necessary resources