| Isabela's 4th congressional district | |
|---|---|
| Constituency for the House of Representatives of the Philippines | |
 Boundary of Isabela's 4th congressional district in Isabela | |
 Location of Isabela within the Philippines | |
| Province | Isabela |
| Region | Cagayan Valley |
| Population | 268,602 (2020)[1] |
| Electorate | 192,229 (2022)[2] |
| Major settlements | |
| Area | 1,922.44 km2 (742.26 sq mi) |
| Current constituency | |
| Created | 1987 |
| Representative | Joseph S. Tan |
| Political party | Lakas–CMD |
| Congressional bloc | Majority |
Isabela's 4th congressional district is one of the six congressional districts of the Philippines in the province of Isabela. It has been represented in the House of Representatives of the Philippines since 1987.[3] The district consists of the independent component city of Santiago and the municipalities of Cordon, Dinapigue, Jones, and San Agustin. It is currently represented in the 19th Congress by Joseph S. Tan of the Lakas–CMD.[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 January 16, 2025.
- ^ "Roster of Philippine legislators". House of Representatives of the Philippines. Archived from the original on March 16, 2017. Retrieved February 25, 2023.
- ^ "House Members". House of Representatives of the Philippines. Retrieved February 25, 2023.