About Ilocos Sur
Ilocos Sur is a mid-sized city located in Philippines, in the Ilocos Region region. According to the latest available data (2026), the population of Ilocos Sur is approximately 709,991 residents, making it the #45 most populous city in Philippines.
Globally, Ilocos Sur ranks #2,614 among the world's most populated cities.
Ilocos Sur City Statistics
| City | Ilocos Sur |
| Country |  Philippines |
| Population | 709,991 |
| Global Rank | #2,614 |
| Rank in Philippines | #45 of 251 cities |
| City Category | mid-sized city |
| Region | Ilocos Region |
| Latitude | 17.3333 |
| Longitude | 120.5833 |
| Data Year | 2026 |
Population Comparison
To put Ilocos Sur's population of 709,991 into perspective:
- Ilocos Sur has over 709,000 residents.
Where is Ilocos Sur Located?
Ilocos Sur is located in Philippines, in the Ilocos Region region, at coordinates 17.3333° latitude and 120.5833° longitude. Located near the equator, Ilocos Sur experiences a tropical climate with warm temperatures throughout the year.
Nearby Cities
Other Cities in Philippines
Largest Cities in Philippines
| # | City | Population |
|---|---|---|
| 1 | Bulacan | 3,876,806 |
| 2 | Laguna | 3,687,345 |
| 3 | Rizal | 3,416,541 |
| 4 | Bohol | 3,400,522 |
| 5 | Quezon City | 3,084,270 |
Frequently Asked Questions
What is the population of Ilocos Sur?
The population of Ilocos Sur is approximately 709,991 residents according to the latest available data (2026).
Where is Ilocos Sur located?
Ilocos Sur is located in Philippines at approximately 17.3333° latitude and 120.5833° longitude.
Is Ilocos Sur one of the largest cities in Philippines?
With a population of 709,991, Ilocos Sur is one of the notable urban areas in Philippines. It ranks #45 out of 251 cities in the country.
