Melipilla is a Chilean commune and capital city of the province of the same name, located in the Santiago Metropolitan Region southwest of the nation's capital. The commune spans an area of.


According to the 2002 census of the National Statistics Institute, it has 108,540 inhabitants. An approximate population of 116,680 inhabitants is estimated in 2015. Melipilla spans an area of. Of these, 60,898 lived in urban areas and 33,642 in rural areas.


As a commune, Melipilla is a third-level administrative division of Chile administered by a municipal council, headed by an alcalde who is directly elected every four years. The 2016-2020 alcalde is Ivan Campos. The council has the following members:
Within the electoral divisions of Chile, Melipilla is represented in the Chamber of Deputies by Raúl Leiva, Marisela Santibáñez, Juan Antonio Coloma, Jaime Bellolio, Leonardo Soto and Renato Garín as part of the 14st electoral district,. The commune is represented in the Senate by Guido Girardi Lavín and Andrés Allamand.


, a commuter rail line linking Melipilla with Santiago is currently being planned.