Ilocos Sur, officially the Province of Ilocos Sur (Ilocano: Probinsia ti Ilocos Sur; Tagalog: Lalawigan ng 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.
Ilocos Sur was founded by the Spanish conquistador Juan de Salcedo in 1572. It was formed when the north (now Ilocos Norte) split from the south (Ilocos Sur). At that time, it included parts of Abra and the upper half of present-day La Unión. The current boundary of the province was permanently defined through Act No. 2683 signed in March 1917.
The province is home to two UNESCO World Heritage Sites, namely, the Heritage City of Vigan and the Baroque Church of Santa Maria.
| Type: | Province |
|---|---|
| Capital: | Vigan |
| Area: | 2,596.00 km (1,002.32 sq mi) |
| Area Rank: | 51st out of 81 |
| Population: | 706,009 |
| Population Rank: | 43rd out of 81 |
| Density: | 0.65% |
| ZIP code: | 2700–2733 |
| Website: | mis.ilocossur.gov.ph |
Online Interactive Map
Explore the interactive online map of Ilocos Sur, which highlights the administrative boundaries with each sub-administrative unit distinctly colored for easy identification. Just click on the map, and the name of the sub-unit will display, providing an intuitive and engaging way to navigate the area. Users can also view the map in full screen and switch between different map views, including OpenStreetMap, Google Maps, and satellite imagery.
Click on 
to view map in "full screen" mode.
Ilocos Sur Political Map
Map of Ilocos Sur Province, Philippines the administrative divisions, provincial boundaries, along with detailed depictions of streets, roads, rivers, landmarks, and other geographical features.
