| Ilocos Sur's 1st congressional district | |
|---|---|
| Constituency for the House of Representatives of the Philippines | |
 Location of Ilocos Sur within the Philippines | |
| Province | Ilocos Sur |
| Region | Ilocos Region |
| Population | 407,676 (2020)[1] |
| Electorate | 201,188 (2022)[2] |
| Major settlements | 11 LGUs
|
| Area | 518.73 km² |
| Current constituency | |
| Created | 1907 |
| Representative | Ronald Singson |
| Political party | NPC |
| Congressional bloc | Majority |
Ilocos Sur's 1st congressional district is one of the two congressional districts of the Philippines in the province of Ilocos Sur. It has been represented in the House of Representatives of the Philippines since 1916 and earlier in the Philippine Assembly from 1907 to 1916.[3] The district consists of the provincial capital city of Vigan and adjacent municipalities of Bantay, Cabugao, Caoayan, Magsingal, San Ildefonso, San Juan, San Vicente, Santa Catalina, Santo Domingo and Sinait. It is currently represented in the 19th Congress by Ronald Singson of the Nationalist People's Coalition (NPC).[4]
- ^ Census of Population (2020). Table B - Population and Annual Growth Rates by Province, City, and Municipality - By Region. Philippine Statistics Authority. Retrieved July 8, 2021.
- ^ "Number and Turn-Out of Registered Voters and Voters Who Actually Voted by City/Municipality May 9, 2022 National and Local Elections". Commission on Elections. Retrieved December 2, 2023.
- ^ "Roster of Philippine legislators". House of Representatives of the Philippines. Archived from the original on March 16, 2017. Retrieved April 11, 2020.
- ^ "House Members". House of Representatives of the Philippines. Retrieved April 11, 2020.