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Primary PHLPost ZIP for Oas. In NCR and some large cities, barangays can have different ZIPs. Confirm with PHLPost.
Punong Barangay
Imelda Brijuega Godezano(2023 - 2026 term)
Next BSKE
November 2, 2026
Barangay Ilaor Sur · Data updated 2026-06-30
Historical Population
Philippine Statistics Authority
-27.4% since 2015
Population history of Barangay Ilaor Sur from official Philippine Statistics Authority census releases.
Census
Population
Change
% change
2015 Census
2,202
—
—
2020 CPH
1,778
-424
-19.3%
2024 POPCEN
1,599
-179
-10.1%
2015–2020: -19.3% total (-4.19%/yr).2020–2024: -10.1% total (-2.62%/yr).
Source: PSA Census of Population (2015), Census of Population and Housing (2020), and POPCEN (2024) as published by the Philippine Statistics Authority. Figures are official as declared by Proclamation.
Comparative Context
2024 POPCEN
Rank in Oas
15thof 53
Among the upper half of Oas by population.
Share of Oas
2.5%
of the municipality's total 64,890 residents.
Rank in Albay
318thof 720
Province-wide percentile: 56.
PSA Classification
Rural
Lower density, predominantly non-built-up land use.
Income Classification
1st
BLGF highest fiscal capacity tier.
Oas (municipality) class
1st
Parent municipality income class — influences LGU services and budget that reach this barangay.
Rankings derived from the most recent PSA population data for each barangay. Classifications sourced from the Philippine Statistics Authority and Bureau of Local Government Finance.
About Barangay Ilaor Sur
Barangay Ilaor Sur is a small barangay in the municipality of Oas, located in the province of Albay, in the Bicol Region region of the Philippines.
According to the 2024 POPCEN (Census of Population) published by the Philippine Statistics Authority, Barangay Ilaor Sur had a population of 1,599. This made it the 15th largest of 53 barangays in Oas by population, placing it in the upper half of the municipality. Residents of Barangay Ilaor Sur accounted for approximately 2.46% of the total population of Oas, which stood at 64,890 in the same 2024 POPCEN reference period.
Read more about Barangay Ilaor SurShow less
The barangay recorded 1,778 residents in the 2020 Census of Population and Housing and 1,599 residents in the 2024 POPCEN — a net change of -10.1%, consistent with a contracting settlement. Barangay Ilaor Sur is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.
Oas is a municipality of 53 barangays, of which Barangay Ilaor Sur is one. Within the wider province of Albay, which contains 720 barangays across its component cities and municipalities, Barangay Ilaor Sur ranks 318th by 2024 POPCEN population. Albay is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.
Compiled from official Philippine Statistics Authority census data and Philippine Standard Geographic Code records. Reviewed and published by the Barangay Directory editorial team. See our methodology for sources, verification process, and update cadence.
Important: Officials shown here reflect the 2023 - 2026 term. Barangay leadership can change due to resignation, succession, or special circumstances. Always verify directly with Oas or the barangay hall before relying on this information for any official transaction, legal matter, or formal communication. The next Barangay and SK Elections are scheduled for Monday, November 2, 2026.
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These services are available at every barangay hall in the Philippines under Republic Act 7160 (Local Government Code). Visit Barangay Ilaor Sur in Oas during office hours to request any of the following.
Services listed are based on Republic Act 7160 (Local Government Code of 1991). Specific requirements and fees vary by barangay. Always call the hall before visiting to confirm requirements and availability.
🆘Emergency Hotlines
Verified April 2026. In a life-threatening emergency, dial 911 first.
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Frequently Asked Questions about Barangay Ilaor Sur
Where is Barangay Ilaor Sur located?▾
Barangay Ilaor Sur is a barangay in the municipality of Oas, Albay, Bicol Region, Philippines.
What is the address of the Barangay Ilaor Sur hall?▾
Barangay Ilaor Sur is located in Oas, Albay, Bicol Region, Philippines. The exact street address of the barangay hall is being verified.
Who is the Punong Barangay of Barangay Ilaor Sur?▾
The Punong Barangay (barangay captain) of Barangay Ilaor Sur is Imelda Brijuega Godezano (2023 - 2026 term).
How can I contact Barangay Ilaor Sur?▾
Verified contact information for Barangay Ilaor Sur is being collected. You can reach the local barangay hall in person or check the official Oas LGU website. Submit verified information using the form on this page.
What municipality is Barangay Ilaor Sur part of?▾
Barangay Ilaor Sur is one of 53 barangays in the municipality of Oas, Albay, Philippines.
Is Barangay Ilaor Sur urban or rural?▾
Barangay Ilaor Sur is officially classified as rural by the Philippine Statistics Authority. Rural classification is applied to barangays with lower population density and predominantly non-built-up land use — often agricultural, coastal, or upland areas with more dispersed housing.
What is the income classification of Oas?▾
Oas is classified as a 1st by the Bureau of Local Government Finance. This classification is based on the municipality's annual regular income and broadly indicates the size of the local government's budget for services like health, sanitation, peace and order, and infrastructure that reach barangays such as Barangay Ilaor Sur.
Has the population of Barangay Ilaor Sur been growing or shrinking?▾
Between the 2020 and 2024 censuses, Barangay Ilaor Sur went from 1,778 residents to 1,599 — a change of -10.1% over the intercensal period. The barangay is shrinking significantly based on figures published by the Philippine Statistics Authority in the 2024 POPCEN.
What region of the Philippines is Barangay Ilaor Sur in?▾
Barangay Ilaor Sur is part of the Bicol Region administrative region of the Philippines. Within Bicol Region, the barangay falls under the province of Albay, and is one of 53 barangays administered by Oas.
How many barangays are in Oas?▾
Oas has 53 barangays, including Barangay Ilaor Sur. You can browse the full list on our Oas page.
How many residents does Barangay Ilaor Sur have?▾
Barangay Ilaor Sur had a population of 1,599 residents according to the 2024 POPCEN (Census of Population) published by the Philippine Statistics Authority.
What is the ZIP code of Barangay Ilaor Sur?▾
The primary PHLPost ZIP code for Oas is 4505. In most Philippine municipalities, this same ZIP applies to every barangay in the city. However, in NCR cities (Manila, Quezon City, Makati, etc.) and a few large cities like Cebu City, Davao City, and Baguio, each barangay may have its own ZIP code. For the most accurate ZIP for Barangay Ilaor Sur, confirm with PHLPost at https://phlpost.gov.ph.
When was this page last updated?▾
The information on this page for Barangay Ilaor Sur was last updated on 2026-06-30. Barangay leadership, contact information, and hours can change — always verify directly with the barangay hall before relying on this information for any official transaction.
Looking for general barangay-services questions — barangay clearance, cedula, BSKE 2026, or emergency hotlines? See our barangay services guides.
Helpful Guides for Residents of Barangay Ilaor Sur
Editorial process and update cadence documented in our methodology. Errors or corrections welcome via the submission form above. This page was last updated on 2026-06-30.
