Barangay Mallabo is a barangay in San Mariano, Isabela, in the Cagayan Valley (Region II) of the Philippines. Registered under PSGC code 0203131021 with ZIP code 3332, it had a 2020 Census population of 853. That makes it the 27th most populous of San Mariano's 36 barangays (1.4% of the municipal total of 61,876). It sits at about 68.7 m above sea level at coordinates 16.9931, 121.9885.
Overview
Barangay Mallabo is a local community situated within San Mariano, Isabela. Serving as the primary administrative building block of local governance, it connects local residents directly to municipal public services, community development, and regional infrastructure networks.
Demographics & Population Trends
Insights into growth, age distributions, and household composition.
Historical Population Growth
Barangay Mallabo is tracked across every census round conducted by the Philippine Statistics Authority. The table and bar chart below trace its recorded population from 1990 to 2020, together with the annualized growth rate and net population change between counts. Read side by side, they show whether Mallabo is expanding, contracting, or holding steady within San Mariano, a signal that informs housing demand, school-age population, and the delivery of local public services.
| Census Date | Population | Growth | Net |
|---|---|---|---|
| 1990 May 1 | 663 | — | — |
| 1995 Sep 1 | 594 | -2.04% | -69 |
| 2000 May 1 | 600 | +0.22% | 6 |
| 2007 Aug 1 | 551 | -1.17% | -49 |
| 2010 May 1 | 721 | +10.28% | 170 |
| 2015 Aug 1 | 838 | +2.9% | 117 |
| 2020 May 1 | 853 | +0.37% | 15 |
Age Distribution (2015 Census)
The age profile of Barangay Mallabo is drawn from the 2015 Census and grouped into five-year age bands. The table and bar chart below show how residents split across the young dependent population, the working-age population, and older residents, the balance that drives the local dependency ratio and median age. A community weighted toward working-age adults points to a wider labor force, while a broad base of children signals future demand for schools, health centers, and youth programs in San Mariano.
| Age Group | Population | Share |
|---|---|---|
| Under 1 | 25 | 2.98% |
| 1 to 4 | 84 | 10.02% |
| 5 to 9 | 97 | 11.58% |
| 10 to 14 | 70 | 8.35% |
| 15 to 19 | 53 | 6.32% |
| 20 to 24 | 87 | 10.38% |
| 25 to 29 | 85 | 10.14% |
| 30 to 34 | 59 | 7.04% |
| 35 to 39 | 56 | 6.68% |
| 40 to 44 | 35 | 4.18% |
| 45 to 49 | 51 | 6.09% |
| 50 to 54 | 43 | 5.13% |
| 55 to 59 | 44 | 5.25% |
| 60 to 64 | 21 | 2.51% |
| 65 to 69 | 9 | 1.07% |
| 70 to 74 | 7 | 0.84% |
| 75 to 79 | 6 | 0.72% |
| 80 and over | 6 | 0.72% |
Young population (0-14) · 32.94%
Working-age population (15-64) · 63.72%
Older population (65+) · 3.34%
Household Trends
Household formation in Barangay Mallabo is measured each census through the number of households and the average household size. The table and bar chart below plot how the household count has moved across the years. A rising number of households alongside a falling average size usually reflects smaller family units and new home formation, while a steady average size suggests multigenerational living remains common. These figures help gauge local housing stock, utility demand, and the pace of residential development in San Mariano.
| Census Date | Households | Avg. Size |
|---|---|---|
| 1990 May 1 | 133 | 4.98 |
| 1995 Sep 1 | 120 | 4.95 |
| 2000 May 1 | 110 | 5.45 |
| 2007 Aug 1 | 121 | 4.55 |
| 2010 May 1 | 154 | 4.68 |
| 2015 Aug 1 | 202 | 4.15 |
Location & Environment
Geographic coordinates, comparative elevation, and environmental risk profile.
Relative rank among San Mariano's barangays by 2020 population.
Elevation profile, compared to the 95.3 m municipal median.
Barangay Mallabo is located at approximately 16.9931, 121.9885 (16°59'35" N, 121°59'19" E) on Luzon , roughly 68.7 meters above sea level.
Hazard Profile & Risk Context
Cagayan Valley lies along the main track of Pacific tropical cyclones and sees frequent typhoon passage during the June to November season.
HighCagayan Valley has moderate seismic exposure from regional fault systems, with occasional felt earthquakes.
ModerateLocalized flooding can occur during heavy rainfall, depending on drainage and proximity to rivers and low ground.
ModerateGeneral planning context derived from topographic models. Refer to PHIVOLCS and municipal DRRMO advisories for official disaster risk mapping.
Governance & Administrative Record
Local administration setup and statutory registry parameters.
As the primary administrative tier in the Philippines, Barangay Mallabo in municipality of San Mariano, province of Isabela is led by an elected Punong Barangay alongside a Sangguniang Barangay composed of seven elected council members. The barangay council oversees neighborhood disputes via the Lupong Tagapamayapa, enacts local ordinances, and maintains peace and public safety.
Official Registry
PSGC Statutory Data Sheet
Surrounding Area & Local Culture
Nearby communities, cultural landmarks, and local services in San Mariano.
Nearest Barangays
Regional Culinary Highlights
A staple comfort food given IsabelaÔÇÖs status as the top mung bean producer; often cooked with tinapa (smoked fish)...
Corn-based DishesUtilizing the province's corn abundance, dishes like corn-fed chicken or corn-based soups are common in local households...
Adobong IsabelaA variation of the national dish that often incorporates a higher ratio of local vinegar and specific cuts of pork or ch...
Dinengdeng (Isabela Style)Features a wider variety of freshwater fish from the province's river systems, seasoned with locally produced bagoong.
Other Barangays in San Mariano
Frequently Asked Questions
Where is Barangay Mallabo located?
Barangay Mallabo is a barangay in San Mariano, Isabela, in the Cagayan Valley (Region II) of the Philippines. Registered under PSGC code 0203131021 with ZIP code 3332, it had a 2020 Census population of 853. That makes it the 27th most populous of San Mariano's 36 barangays (1.4% of the municipal total of 61,876). It sits at about 68.7 m above sea level at coordinates 16.9931, 121.9885.
What is the population of Barangay Mallabo?
853 as of the 2020 Census, the 27th largest of San Mariano's 36 barangays (1.4% of the municipal total).
What is the PSGC code of Barangay Mallabo?
The PSGC code is 0203131021, a nine-digit identifier in the PSA classification.
What is the ZIP code of Barangay Mallabo?
ZIP 3332, covering San Mariano and its barangays.
How many barangays does San Mariano have?
36 barangays per the PSA PSGC 1Q 2026 release.
Notes & Data Sources
- Administrative boundaries sourced from the PSA PSGC 1Q 2026 dataset release.
- Population figures and geographical metrics are integrated from official PhilAtlas and PSA Census records.