List of barangays in Ilagan

Ilagan, the most populous city in the Isabela, is politically subdivided into 91 barangays. There are currently 13 barangays of Ilagan City's that are classified as urban.

Barangays by clusters
These barangays are grouped into four clusters: Poblacion, Eastern, Western, and San Antonio.

Poblacion

 * Alibagu
 * Baculud
 * Bagumbayan
 * Baligatan
 * Calamagui 1st
 * Calamagui 2nd
 * Camunatan
 * Centro Poblacion
 * Fugu
 * Guinatan
 * Imelda Bliss Village
 * Malalam
 * Osmeña
 * San Felipe
 * San Vicente
 * Santa Barbara
 * Santo Tomas

Eastern

 * Alinguigan 1st
 * Alinguigan 2nd
 * Alinguigan 3rd
 * Ballacong
 * Bangang
 * Batong-Labang
 * Cadu
 * Capellan
 * Capo
 * Fuyo
 * Manaring
 * Marana I
 * Marana II
 * Marana III
 * Minabang
 * Morado
 * Nanaguan
 * Pasa
 * Quimalabasa
 * Rang-ayan
 * Rugao
 * San Andres
 * San Isidro
 * San Juan
 * San Lorenzo
 * San Pablo
 * San Rodrigo
 * Santa Catalina
 * Santa Victoria
 * Sipay
 * Tangcul

Western

 * Arusip
 * Bagong Silang
 * Bigao
 * Cabannungan 1st
 * Cabannungan 2nd
 * Carikkikan Norte
 * Carikkikan Sur
 * Lullutan
 * Malasin
 * Mangcuram
 * Naguilian Norte
 * Naguilian Sur
 * Pilar
 * San Ignacio
 * Santa Isabel Norte
 * Santa Isabel Sur
 * Siffu

San Antonio

 * Aggasian
 * Cabeseria 10
 * Cabeseria 14 & 16
 * Cabeseria 17 & 21
 * Cabeseria 19
 * Cabeseria 22
 * Cabeseria 23
 * Cabeseria 25
 * Cabeseria 27
 * Cabeseria 2
 * Cabeseria 3
 * Cabeseria 4
 * Cabeseria 5
 * Cabeseria 6 & 24
 * Cabeseria 7
 * Cabeseria 8
 * Cabeseria 9 & 11
 * Centro-San Antonio
 * Gayong-gayong Norte
 * Gayong-gayong Sur
 * Namnama
 * Paliueg
 * Salindingan
 * Sindon Bayabo
 * Sindon Maride
 * Villa Imelda

Barangay facts

 * By population (2020 census figures)
 * Largest: Imelda Bliss Village (7,951 people)
 * Smallest: Carikkikan Sur (208 people)
 * By population density (to be calculated using 2020 census figures)
 * Most densely populated:
 * Most sparsely populated:
 * By land area
 * Largest: Rugao (11,315 km2)
 * Smallest: Bangag, Cabeseria 25, Cadu, Malasin, Sipay (112 km2)
 * By elevation
 * Highest: Villa Imelda (909.5 m (2,983.9 ft))
 * Lowest: Santo Tomas (38.0 m (124.7 ft))
 * Most extreme points
 * Northernmost: Capellan
 * Easternmost: Sindon Maride
 * Westernmost: Bigao
 * Southernmost: Paliueg

Barangay officials
List below shows the latest population census (as of 2020), economic class, land area, and the current Barangay Captains (Punong Barangay), and SK chairpersons serving their terms from 2023 to 2025, considered as the shortest term of office.

Gaylor M. Malunay from barangay Cabeseria 3, is the current president of the Liga ng mga Barangay (LNB). Errol John R. Nebalasca from barangay Santa Isabel Sur, is the current president of SK Federation.

Each barangays has seven barangay kagawad, and seven SK kagawad to form the barangay council. Also includes Barangay Justice System as the Lupon Tagapamayapa. Barangay tanods serve as barangay police officers.

As of the most recent Barangay and SK elections held on Monday, October 30, 2023, there are:
 * 91 barangay captains (Punong Barangay)
 * 637 barangay councilors (Barangay Kagawad)
 * 91 Sangguniang Kabataan (SK) chairpersons
 * 637 Sangguniang Kabataan (SK) councilors


 * Italicized names are former names, except for Barangays Cabeseria 2 to Cabeseria 27 where their names can be interchanged or both are used respectively.