Oas is subdivided into 53 barangays, the smallest and most fundamental units of local governance in the Philippines. Each barangay listed below carries its official PSGC code and links to a full local profile.
About Barangays in Oas
Oas is a municipality in the province of Albay, Bicol Region, Philippines with ZIP code 4504. It is officially subdivided into 53 barangays, which serve as the smallest and most fundamental units of local governance in the Philippine administrative system.
Each barangay in Oas is governed by an elected Punong Barangay (barangay captain) and a Sangguniang Barangay (barangay council) composed of seven elected members, a Sangguniang Kabataan (youth council) chairperson, and a barangay secretary and treasurer. The council enacts local ordinances, maintains peace and order, mediates community disputes through the Lupong Tagapamayapa, and delivers basic services including health, sanitation, and disaster risk reduction.
All barangays on this page are registered under the Philippine Standard Geographic Code (PSGC) system maintained by the Philippine Statistics Authority (PSA). The nine-digit PSGC code uniquely identifies each barangay within the national administrative hierarchy.
Complete Barangay Directory
All 53 barangays listed alphabetically with official PSGC codes.
Official Registry
Barangays under Oas
Understanding the PSGC Code
How the nine-digit Philippine Standard Geographic Code identifies each barangay.
The PSGC is a nine-digit numerical code used by the Philippine Statistics Authority to uniquely identify every local government unit in the country. For barangays in Oas, the code breaks down as follows:
The first six digits (050051) are shared by every barangay in Oas, uniquely identifying the municipality. The final two digits differentiate each individual barangay within the municipality.
Frequently Asked Questions
How many barangays does Oas have?
Oas has 53 officially recognized barangays under its jurisdiction, as registered in the Philippine Statistics Authority PSGC 1Q 2026 release.
What is a barangay in the Philippines?
A barangay is the smallest and most fundamental unit of local government in the Philippines. It is led by an elected Punong Barangay (barangay captain) and a Sangguniang Barangay (council) of seven members. Barangays maintain community peace and order, deliver basic social services, and mediate local disputes through the Lupong Tagapamayapa.
What is the PSGC code of Oas?
The PSGC code of Oas is 0500512000. All barangays within Oas share the first six digits 050051, with the final two digits differentiating each individual barangay.
What is the ZIP code of Oas?
The PhilPost ZIP code of Oas is 4504. This postal code applies to all barangays under the municipality of Oas, Albay, and is used for mail delivery throughout the area.
How are barangays governed in the Philippines?
Each barangay is governed by an elected Punong Barangay and a Sangguniang Barangay of seven councilors, a Sangguniang Kabataan chairperson, and an appointed barangay secretary and treasurer. Officials serve three-year terms and are responsible for local ordinances, community welfare programs, and grassroots governance.
Where is Oas located?
Oas is a municipality in the province of Albay, Bicol Region, Philippines. It holds PSGC code 0500512000 and ZIP code 4504, and is composed of 53 barangays.
Notes & Data Sources
- Barangay names, counts, and codes are sourced from the PSA PSGC 1Q 2026 dataset release.
- Barangay counts reflect the official administrative structure as of January 2026.
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