Under Republic Act 12232, elected barangay officials serve a four-year term. Make sure you are registered and know your polling place before election day.
Primary PHLPost ZIP for San Mateo. In NCR and some large cities, barangays can have different ZIPs. Confirm with PHLPost.
Punong Barangay
Ruperto A. De Guzman JR.(2023 - 2026 term)
Next BSKE
November 2, 2026
Barangay San Marcos · Data updated 2026-05-25
About Barangay San Marcos
Barangay San Marcos is a small barangay in the municipality of San Mateo, located in the province of Isabela, in the Cagayan Valley region of the Philippines.
According to the 2024 POPCEN (Census of Population) published by the Philippine Statistics Authority, Barangay San Marcos had a population of 1,847. This made it the 18th largest of 33 barangays in San Mateo by population, placing it in the middle tier of the municipality. Residents of Barangay San Marcos accounted for approximately 2.74% of the total population of San Mateo, which stood at 67,433 in the same 2024 POPCEN reference period.
Read more about Barangay San MarcosShow less
The barangay recorded 1,821 residents in the 2020 Census of Population and Housing and 1,847 residents in the 2024 POPCEN — a net change of +1.4%, consistent with a slowly expanding settlement. Barangay San Marcos is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.
San Mateo is a municipality comprising 33 barangays, and serves as the governing unit directly responsible for local services in Barangay San Marcos, including public health, sanitation, peace and order, and civil registration. Within the wider province of Isabela, which contains 1,055 barangays across its component cities and municipalities, Barangay San Marcos ranks 323rd by 2024 POPCEN population. Isabela is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.
Like every Philippine barangay, Barangay San Marcos is led by an elected Punong Barangay (barangay captain) supported by seven Sangguniang Barangay members (kagawads), an SK Chairperson, a Barangay Secretary, and a Barangay Treasurer. The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, with officials serving four-year terms under Republic Act No. 12232.
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 San Mateo 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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Population history of Barangay San Marcos from official Philippine Statistics Authority census releases.
Census
Population
Change
% change
2015 Census
1,622
—
—
2020 CPH
1,821
+199
+12.3%
2024 POPCEN
1,847
+26
+1.4%
2015–2020: +12.3% total (+2.34%/yr).2020–2024: +1.4% total (+0.36%/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 San Mateo
18thof 33
Among the lower half of San Mateo by population.
Share of San Mateo
2.7%
of the municipality's total 67,433 residents.
Rank in Isabela
323rdof 1,055
Province-wide percentile: 69.
PSA Classification
Rural
Lower density, predominantly non-built-up land use.
Income Classification
1st
BLGF highest fiscal capacity tier.
San Mateo (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.
These services are available at every barangay hall in the Philippines under Republic Act 7160 (Local Government Code). Visit Barangay San Marcos in San Mateo 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.
Notice a hotline change? Report it so we can update this page.
Frequently Asked Questions about Barangay San Marcos
Where is Barangay San Marcos located?▾
Barangay San Marcos is a barangay in the municipality of San Mateo, Isabela, Cagayan Valley, Philippines.
What is the address of the Barangay San Marcos hall?▾
Barangay San Marcos is located in San Mateo, Isabela, Cagayan Valley, Philippines. The exact street address of the barangay hall is being verified.
Who is the Punong Barangay of Barangay San Marcos?▾
The Punong Barangay of Barangay San Marcos is Ruperto A. De Guzman JR. (2023 - 2026 term). The next Barangay and Sangguniang Kabataan Elections are scheduled for Monday, November 2, 2026.
How can I contact Barangay San Marcos?▾
You can contact Barangay San Marcos via phone at (078)3241402.
What municipality is Barangay San Marcos part of?▾
Barangay San Marcos is one of 33 barangays in the municipality of San Mateo, Isabela, Philippines.
Is Barangay San Marcos urban or rural?▾
Barangay San Marcos 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 San Mateo?▾
San Mateo 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 San Marcos.
Has the population of Barangay San Marcos been growing or shrinking?▾
Between the 2020 and 2024 censuses, Barangay San Marcos went from 1,821 residents to 1,847 — a change of +1.4% over the intercensal period. The barangay is slowly growing based on figures published by the Philippine Statistics Authority in the 2024 POPCEN.
What region of the Philippines is Barangay San Marcos in?▾
Barangay San Marcos is part of the Cagayan Valley administrative region of the Philippines. Within Cagayan Valley, the barangay falls under the province of Isabela, and is one of 33 barangays administered by San Mateo.
How many barangays are in San Mateo?▾
San Mateo has 33 barangays, including Barangay San Marcos. You can browse the full list on our San Mateo page.
How many residents does Barangay San Marcos have?▾
Barangay San Marcos had a population of 1,847 residents according to the 2024 POPCEN (Census of Population) published by the Philippine Statistics Authority.
What is the ZIP code of Barangay San Marcos?▾
The primary PHLPost ZIP code for San Mateo is 3318. 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 San Marcos, confirm with PHLPost at https://phlpost.gov.ph.
When was this page last updated?▾
The information on this page for Barangay San Marcos was last updated on 2026-05-25. 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 San Marcos
Editorial process and update cadence documented in our methodology. Errors or corrections welcome via the submission form above. This page was last updated on 2026-05-25.
