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]

Six Districts (since 2019)

1st District

• City: Ilagan
• Municipalities: Cabagan, Delfin Albano, Divilacan, Maconacon, San Pablo, Santa Maria, Santo Tomas, Tumauini
• Population (2020): 399,196

Period	Representative
18th Congress 2019–2022	Antonio T. Albano
19th Congress 2022–2025

2nd District

• Municipalities: Benito Soliven, Gamu, Naguilian, Palanan, Reina Mercedes, San Mariano
• Population (2020): 199,903

Period	Representative
18th Congress 2019–2022	Ed Christopher S. Go
19th Congress 2022–2025

3rd District

• Municipalities: Alicia, Angadanan, Cabatuan, Ramon, San Mateo
• Population (2020): 282,027

Period	Representative
18th Congress 2019–2022	Ian Paul L. Dy
19th Congress 2022–2025

4th District

• City: Santiago^[a]
• Municipalities: Cordon, Dinapigue, Jones, San Agustin
• Population (2020): 268,602

Period	Representative
18th Congress 2019–2022	Alyssa Sheena P. Tan
19th Congress 2022–2025	Joseph S. Tan

5th District

• Municipalities: Aurora, Burgos, Luna, Mallig, Quezon, Quirino, Roxas, San Manuel
• Population (2020): 267,550

Period	Representative
18th Congress 2019–2022	Faustino Michael Carlos T. Dy III
19th Congress 2022–2025

6th District

• City: Cauayan
• Municipalities: Echague, San Guillermo, San Isidro
• Population (2020): 279,772

Period	Representative
18th Congress 2019–2022	Faustino A. Dy V
19th Congress 2022–2025

Four Districts (1987–2019)

1st District

• City: Ilagan (became a city in 2012)
• Municipalities: Cabagan, Delfin Albano, Divilacan, Maconacon, Palanan, San Pablo, Santa Maria, Santo Tomas, Tumauini

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

• Municipalities: Aurora, Benito Soliven, Burgos, Gamu, Mallig, Naguilian, Quezon, Quirino, Roxas, San Manuel, San Mariano

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

• City: Cauayan (became a city in 2001)
• Municipalities: Alicia, Angadanan, Cabatuan, Luna, Reina Mercedes, San Guillermo, San Mateo

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

• City: Santiago^[a] (became a city in 1994)
• Municipalities: Cordon, Dinapigue, Echague, Jones, Ramon, San Agustin, San Isidro

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. 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.^[3] 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.^[4]

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.