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, increasing the legislative districts from four to six and reapportioned the district assignments of cities and municipalities.

Six Districts (since 2019)

1st District">Isabela's 1st congressional district">1st District

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

Period	Representative
18th Congress 2019-2022	Antonio T. Albano
19th Congress 2022-2025	Antonio T. Albano
20th Congress 2025-2028	Antonio T. Albano

[Isabela's [2nd congressional district|2nd District]]

Municipalities: Benito Soliven, Gamu, Naguilian, Palanan, Reina Mercedes, San Mariano
Population : 199,903

Period	Representative
18th Congress 2019-2022	Ed Christopher S. Go
19th Congress 2022-2025	Ed Christopher S. Go
20th Congress 2025-2028	Ed Christopher S. Go

[Isabela's [3rd congressional district|3rd District]]

Municipalities: Alicia, Angadanan, Cabatuan, Ramon, San Mateo
Population : 282,027

Period	Representative
18th Congress 2019-2022	Ian Paul L. Dy
19th Congress 2022-2025	Ian Paul L. Dy
20th Congress 2025-2028	Ian Paul L. Dy

4th District">Isabela's 4th congressional district">4th District

City: Santiago
Municipalities: Cordon, Dinapigue, Jones, San Agustin
Population : 268,602

Period	Representative
18th Congress 2019-2022	Alyssa Sheena P. Tan
19th Congress 2022-2025	Joseph S. Tan
20th Congress 2025-2028	Joseph S. Tan

5th District">Isabela's 5th congressional district">5th District

Municipalities: Aurora, Burgos, Luna, Mallig, Quezon, Quirino, Roxas, San Manuel
Population : 267,550

Period	Representative
18th Congress 2019-2022	Faustino Michael Carlos T. Dy III
19th Congress 2022-2025	Faustino Michael Carlos T. Dy III
20th Congress 2025-2028	Faustino Michael Carlos T. Dy III

6th District">Isabela's 6th congressional district">6th District

City: Cauayan
Municipalities: Echague, San Guillermo, San Isidro
Population : 279,772

Period	Representative
18th Congress 2019-2022	Faustino A. Dy V
19th Congress 2022-2025	Faustino A. Dy V
20th Congress 2025-2028	Faustino D.G. Dy III

Four Districts (1987–2019)

1st District

City: Ilagan
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	Rodolfo B. Albano, Jr.
10th Congress 1995-1998	Rodolfo B. Albano, Jr.
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	Rodolfo T. Albano III
15th Congress 2010-2013	Rodolfo B. Albano, Jr.
16th Congress 2013-2016	Rodolfo T. Albano III
17th Congress 2016-2019	Rodolfo T. Albano III

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	Faustino S. Dy, Jr.
11th Congress 1998-2001	Faustino S. Dy, Jr.
12th Congress 2001-2004	Edwin C. Uy
13th Congress 2004-2007	Edwin C. Uy
14th Congress 2007-2010	Edwin C. Uy
15th Congress 2010-2013	Ana Cristina S. Go
16th Congress 2013-2016	Ana Cristina S. Go
17th Congress 2016-2019	Ana Cristina S. Go

3rd District

City: Cauayan
Municipalities: Alicia, Angadanan, Cabatuan, Luna, Reina Mercedes, San Guillermo, San Mateo

Period	Representative
8th Congress 1987-1992	Santiago P. Respicio
9th Congress 1992-1995	Santiago P. Respicio
10th Congress 1995-1998	Santiago P. Respicio
11th Congress 1998-2001	Ramon M. Reyes
12th Congress 2001-2004	Faustino G. Dy III
13th Congress 2004-2007	Faustino G. Dy III
14th Congress 2007-2010	Faustino G. Dy III
15th Congress 2010-2013	Napoleon S. Dy
16th Congress 2013-2016	Napoleon S. Dy
17th Congress 2016-2019	Napoleon S. Dy

4th District

City: Santiago
Municipalities: Cordon, Dinapigue, Echague, Jones, Ramon, San Agustin, San Isidro

Period	Representative
8th Congress 1987-1992	Antonio M. Abaya
9th Congress 1992-1995	Antonio M. Abaya
10th Congress 1995-1998	Antonio M. Abaya
11th Congress 1998-2001	Heherson T. Alvarez
12th Congress 2001-2004	Antonio M. Abaya
12th Congress 2001-2004	Giorgidi B. Aggabao
13th Congress 2004-2007	Anthony Miranda
14th Congress 2007-2010	Giorgidi B. Aggabao
15th Congress 2010-2013	Giorgidi B. Aggabao
16th Congress 2013-2016	Giorgidi B. Aggabao
17th Congress 2016-2019	Ma. Lourdes R. Aggabao

'''Notes'''

Lone District (defunct)

Period	Representative
1st Philippine Legislature 1907-1909	Nicasio Claravall
1st Philippine Legislature 1907-1909	Dimas Guzman
2nd Philippine Legislature 1909-1912	Eliseo Claravall
3rd Philippine Legislature 1912-1916	Eliseo Claravall
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	Mauro Verzosa
1st Commonwealth Congress 1945	Lino J. Castillejos
1st Congress 1946-1949	Domingo Paguirigan
2nd Congress 1949-1953	Samuel Reyes
3rd Congress 1953-1957	Samuel Reyes
4th Congress 1957-1961	Delfin B. Albano
5th Congress 1961-1965	Delfin B. Albano
6th Congress 1965-1969	Melanio T. Singson
7th Congress 1969-1972	Rodolfo B. Albano, Jr.

'''Notes'''