Puerto Montt is a port city and commune in southern Chile, located at the northern end of the Reloncaví Sound in the Llanquihue Province, Lo…Puerto Montt is a port city and commune in southern Chile, located at the northern end of the Reloncaví Sound in the Llanquihue Province, Los Lagos Region, 1,055 km to the south of the capital, Santiago. The commune spans an area of 1,673 km² and has a population of 245,902 in 2017. It is bounded by the communes of Puerto Varas to the north, Cochamó to the east and southeast, Calbuco to the southwest and Maullín and Los Muermos to the west.