The Province of Petorca is located in the North end of the V Region of Valparaiso, has a surface of 4,588.9 km² and has a population of 70,610 inhabitants. Its provincial capital is the City of La Ligua. It is the Province with more size of the Region.

La Ligua
La Ligua is a commune located in the province of Petorca, fifth region of Chile, the communal capital is the city of the Ligua.Integra next to the communes of Town hall, Petorca, Papudo, Zapallar, Puchuncaví, the Limekiln, the Cross, Hijuelas and Quillota the Electoral District N° 10 and belongs to 5ª Senatorial Circumscription (Valparaiso interior).La commune has more than 30,000 inhabitants and the more important economic activities are agriculture, weaves and dulces.A sport outstanding level in futbol amateur winning several regional competitions, that if single in the shade of their archirrivales of Town hall that is the winning association but at regional level.