It is the largest lake of Los Ríos Region and the fourth largest in Chile. Administratively Ranco Lake is split into three communes; La Unión, Futrono and Lago Ranco.
It is the largest lake of Los Ríos Region and the fourth largest in Chile. Administratively, Ranco Lake is divided into three municipalities: La Unión, Futrono, and Lago Ranco.