Legislative districts of Isabela

The legislative districts of Isabela are the representations of the province of Isabela and the independent component city of Santiago in the various national legislatures of the Philippines. The province and the city are currently represented in the lower house of the Congress of the Philippines through their first, second, third, fourth, fifth, and sixth congressional districts.

History

The province was represented as a lone legislative district until 1972. It was part of the representation of Region II from 1978 to 1984, and from 1984 to 1986, it elected 3 assemblymen at-large. In 1986, it was redistricted into four legislative districts.

On September 27, 2018, President Rodrigo Duterte signed Republic Act No. 11080,[1] increasing the legislative districts from four to six and reapportioned the district assignments of cities and municipalities.[2]

Current districts

The province was last redistricted on September 27, 2018, where the fifth and sixth districts were apportioned. All six representatives are part of the majority bloc in the 20th Congress.

Political parties

  PFP (4)
  Lakas–CMD (2)
Legislative districts and representatives of Isabela
District Current Representative Party Constituent LGUs Population (2020)[3] Area[4] Map
Image Name
1st Antonio T. Albano
(since 2019)
Cabagan		 PFP 399,196 4519.71 km²
2nd Ed Christopher S. Go
(since 2019)
San Mariano		 PFP 199,903 2890.49 km²
3rd Ian Paul L. Dy
(since 2019)
Alicia		 Lakas 282,027 686.27 km²
4th Joseph S. Tan
(since 2022)
Santiago		 PFP 268,602 1922.44 km²
5th Faustino Michael Carlos T. Dy III
(since 2019)
San Manuel		 Lakas 267,550 981.43 km²
6th Faustino D. Dy III
(since 2025)
Cauayan		 PFP 279,772 1414.59 km²

Historical districts

Four districts (1987–2019)

1st district

Map of Isabela's First District (1987-2019)
Period Representative
8th Congress
1987–1992		 Rodolfo B. Albano, Jr.
9th Congress
1992–1995
10th Congress
1995–1998
11th Congress
1998–2001		 Rodolfo T. Albano III
12th Congress
2001–2004		 Rodolfo B. Albano, Jr.
13th Congress
2004–2007		 Rodolfo T. Albano III
14th Congress
2007–2010
15th Congress
2010–2013		 Rodolfo B. Albano, Jr.
16th Congress
2013–2016		 Rodolfo T. Albano III
17th Congress
2016–2019

2nd district

Map of Isabela's Second District (1987-2019)
Period Representative
8th Congress
1987–1992		 Simplicio B. Domingo, Jr.
9th Congress
1992–1995		 Faustino S. Dy, Jr.
10th Congress
1995–1998
11th Congress
1998–2001
12th Congress
2001–2004		 Edwin C. Uy
13th Congress
2004–2007
14th Congress
2007–2010
15th Congress
2010–2013		 Ana Cristina S. Go
16th Congress
2013–2016
17th Congress
2016–2019

3rd district

Map of Isabela's Third District (1987-2019)
Period Representative
8th Congress
1987–1992		 Santiago P. Respicio
9th Congress
1992–1995
10th Congress
1995–1998
11th Congress
1998–2001		 Ramon M. Reyes
12th Congress
2001–2004		 Faustino G. Dy III
13th Congress
2004–2007
14th Congress
2007–2010
15th Congress
2010–2013		 Napoleon S. Dy
16th Congress
2013–2016
17th Congress
2016–2019

4th district

Map of Isabela's Fourth District (1987-2019)
Period Representative
8th Congress
1987–1992		 Antonio M. Abaya
9th Congress
1992–1995
10th Congress
1995–1998
11th Congress
1998–2001		 Heherson T. Alvarez
12th Congress
2001–2004		 Antonio M. Abaya[b]
Giorgidi B. Aggabao[c]
13th Congress
2004–2007		 Anthony Miranda
14th Congress
2007–2010		 Giorgidi B. Aggabao
15th Congress
2010–2013
16th Congress
2013–2016
17th Congress
2016–2019		 Ma. Lourdes R. Aggabao

Notes

  1. 1 2 Independent component city since July 4, 1994. Independent from the province and does not vote for provincial officials by virtue of Republic Act No. 7720.[5] Only votes with Isabela for congressional representation.
  2. ↑ Died on February 26, 2003.
  3. ↑ Elected to complete the unexpired term of predecessor, assumed office on May 19, 2003.

Lone district (defunct)

Period Representative
1st Philippine Legislature
1907–1909		 Nicasio Claravall[a]
Dimas Guzman
2nd Philippine Legislature
1909–1912		 Eliseo Claravall
3rd Philippine Legislature
1912–1916
4th Philippine Legislature
1916–1919		 Mauro Verzosa
5th Philippine Legislature
1919–1922		 Miguel Binag
6th Philippine Legislature
1922–1925		 Tolentino Verzosa
7th Philippine Legislature
1925–1928		 Manuel Nieto
8th Philippine Legislature
1928–1931		 Pascual Paguirigan
9th Philippine Legislature
1931–1934		 Silvestre Macutay
10th Philippine Legislature
1934–1935		 Silvino Gumpal
1st National Assembly
1935–1938		 Mauro Verzosa
2nd National Assembly
1938–1941
1st Commonwealth Congress
1945		 Lino J. Castillejos
1st Congress
1946–1949		 Domingo Paguirigan
2nd Congress
1949–1953		 Samuel Reyes
3rd Congress
1953–1957
4th Congress
1957–1961		 Delfin B. Albano
5th Congress
1961–1965
6th Congress
1965–1969		 Melanio T. Singson
7th Congress
1969–1972		 Rodolfo B. Albano, Jr.

Notes

  1. ↑ Unseated by the Assembly.[6]

At-Large (defunct)

1943–1944

Period Representative
National Assembly
1943–1944		 Lino J. Castillejos
Gregorio P. Formoso

1984–1986

Period Representative
Regular Batasang Pambansa
1984–1986		 Rodolfo B. Albano, Jr.
Prospero G. Bello
Simplicio B. Domingo, Jr.

References

  1. ↑ "An act reapportioning the province of Isabela into six (6) legislative districts" (PDF). Archived from the original (PDF) on 2018-09-28.
  2. ↑ Esguerra, Darryl John (27 September 2018). "Duterte creates two new legislative districts in Isabela". newsinfo.inquirer.net.
  3. ↑ "TABLE 1. Population of legislative districts by Region, Province, and selected Highly Urbanized/Component City : 2020" (PDF). Philippine Statistics Authority. Retrieved March 29, 2026.
  4. ↑ "List of Provinces". PSGC Interactive. National Statistical Coordination Board. Archived from the original on April 19, 2016. Retrieved March 29, 2026.
  5. ↑ "REPUBLIC ACT NO. 7720 – AN ACT CONVERTING THE MUNICIPALITY OF SANTIAGO INTO AN INDEPENDENT COMPONENT CITY TO BE KNOWN AS THE CITY OF SANTIAGO" (PDF). March 4, 2016. Archived from the original (PDF) on March 4, 2016.
  6. ↑ Jernegan, Prescott F. (2009). The Philippine Citizen. BiblioBazaar. p. 80. ISBN 978-1-115-97139-3.
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