Barangay Directory

Ilocos Region

Barangays in Ilocos Sur Province

Ilocos Sur is a province in Ilocos Region with 34 cities and municipalities and 768 barangays.

Search within Ilocos Sur

Population & Statistics

2024 POPCEN

Total Population (2024)
709,991
Population (2020)
706,009
Population (2015)
689,668
Growth (2020 → 2024)
+0.6%

Income classification: 1st

Barangay Insights for Ilocos Sur

The most populous barangay in Ilocos Sur is Brgy. Puro with 5,037 residents, while the smallest with a reliable count is Brgy. Bucalag (109). Of the 768 barangays with a classification on record, 7% are urban and 93% rural. Elected-officials records are documented for 100% of the 768 barangays here.

Barangays
768
Avg. population
924
Median population
767
Officials documented
100%
Urban
7%

Most populous

Brgy. Puro

5,037 residents

Smallest (reliable count)

Brgy. Bucalag

109 residents

Fastest growing (2020 to 2024)

Brgy. Suagayan

+44.4%

Aggregated from official Philippine Statistics Authority census data and Philippine Standard Geographic Code records by the Barangay Directory editorial team. See our methodology.

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Ranking

Most Populous Barangays in Ilocos Sur

The largest barangays in Ilocos Sur by population, from the latest Philippine Statistics Authority census.

Full ranking →
  1. 1.Brgy. Puro— 5,037
  2. 2.Brgy. Tamag— 3,616
  3. 3.Brgy. Tablac— 3,530
  4. 4.Brgy. Ayusan Norte— 3,513
  5. 5.Brgy. San Sebastian— 3,479
  6. 6.Brgy. Darapidap— 3,363
  7. 7.Brgy. Pantay Fatima— 3,314
  8. 8.Brgy. Tamorong— 3,141
  9. 9.Brgy. Balaleng— 3,094
  10. 10.Brgy. Calongbuyan— 2,927

Cities & Municipalities in Ilocos Sur

Alilem
Municipality
9 barangays
Banayoyo
Municipality
14 barangays
Bantay
Municipality
34 barangays
Burgos
Municipality
26 barangays
Cabugao
Municipality
33 barangays
City of Candon
City
42 barangays
Caoayan
Municipality
17 barangays
Cervantes
Municipality
13 barangays
Galimuyod
Municipality
24 barangays
Gregorio Del Pilar
Municipality
7 barangays
Lidlidda
Municipality
11 barangays
Magsingal
Municipality
30 barangays
Nagbukel
Municipality
12 barangays
Narvacan
Municipality
34 barangays
Quirino
Municipality
9 barangays
Salcedo
Municipality
21 barangays
San Emilio
Municipality
8 barangays
San Esteban
Municipality
10 barangays
San Ildefonso
Municipality
15 barangays
San Juan
Municipality
32 barangays
San Vicente
Municipality
7 barangays
Santa
Municipality
26 barangays
Santa Catalina
Municipality
9 barangays
Santa Cruz
Municipality
49 barangays
Santa Lucia
Municipality
36 barangays
Santa Maria
Municipality
33 barangays
Santiago
Municipality
24 barangays
Santo Domingo
Municipality
36 barangays
Sigay
Municipality
7 barangays
Sinait
Municipality
44 barangays
Sugpon
Municipality
6 barangays
Suyo
Municipality
8 barangays
Tagudin
Municipality
43 barangays
City of Vigan
City
39 barangays · Capital

Frequently Asked Questions about Ilocos Sur

How many barangays are in Ilocos Sur?▾

Ilocos Sur has 768 barangays across 34 cities and municipalities in the Ilocos Region region of the Philippines.

What is the most populous barangay in Ilocos Sur?▾

The most populous barangay in Ilocos Sur is Brgy. Puro with 5,037 residents, based on the latest census published by the Philippine Statistics Authority.

What is the population of Ilocos Sur?▾

Ilocos Sur had a population of 709,991 according to 2024 POPCEN.

What is the income classification of Ilocos Sur?▾

Ilocos Sur is classified as a 1st by the Bureau of Local Government Finance, based on its average annual regular income.

When was this page last updated?▾

The information on this page for Ilocos Sur was last updated on 2026-06-29. Barangay counts, population figures, and classifications can change over time; always verify with the local government unit before relying on this information for official transactions.