Ercilla is a Chilean town and commune in the Malleco Province, Araucanía Region.

According to the 2002 census of the National Statistics Institute, Ercilla spans an area of 499.7 km2 (193 sq mi) and has 9,041 inhabitants (4,633 men and 4,408 women).

[2] As a commune, Ercilla is a third-level administrative division of Chile administered by a municipal council, headed by an alcalde who is directly elected every four years.

[1] Within the electoral divisions of Chile, Ercilla is represented in the Chamber of Deputies by Gonzalo Arenas (UDI) and Mario Venegas (PDC) as part of the 48th electoral district, together with Angol, Renaico, Collipulli, Los Sauces, Purén, Lumaco and Traiguén.

The commune is represented in the Senate by Alberto Espina Otero (RN) and Jaime Quintana Leal (PPD) as part of the 14th senatorial constituency (Araucanía-North).