Overview
Ilocos Sur, officially the Province of Ilocos Sur, is a province in the Philippines located in the Ilocos Region in Luzon. Located on the mouth of the Mestizo River is the capital of Vigan, while Candon is the most-populous city. Ilocos Sur is bordered by Ilocos Norte and Abra to the north, Mountain Province to the east, La Union and Benguet to the south and the South China Sea to the west.
Geography
Ilocos Sur is one of the 82 provinces of the Philippines. Cited factual data on capital city, population, and area is sourced from Wikipedia and Wikidata structured properties. The province's boundaries, terrain, and notable geographic features are documented in the Philippine Statistics Authority (PSA) Census of Population and Housing.