Barangay Santo Tomas is a barangay in Abulug, Cagayan, in the Cagayan Valley (Region II) of the Philippines. Registered under PSGC code 0201501014 with ZIP code 3517, it had a 2020 Census population of 1,091. That makes it the 14th most populous of Abulug's 20 barangays (3.1% of the municipal total of 35,347). It sits at about 3.9 m above sea level at coordinates 18.442, 121.4263.
Overview
Barangay Santo Tomas is a local community situated within Abulug, Cagayan. 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 Santo Tomas 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 Santo Tomas is expanding, contracting, or holding steady within Abulug, a signal that informs housing demand, school-age population, and the delivery of local public services.
| Census Date | Population | Growth | Net |
|---|---|---|---|
| 1990 May 1 | 892 | — | — |
| 1995 Sep 1 | 748 | -3.24% | -144 |
| 2000 May 1 | 763 | +0.43% | 15 |
| 2007 Aug 1 | 829 | +1.15% | 66 |
| 2010 May 1 | 884 | +2.37% | 55 |
| 2015 Aug 1 | 1,027 | +2.9% | 143 |
| 2020 May 1 | 1,091 | +1.28% | 64 |
Age Distribution (2015 Census)
The age profile of Barangay Santo Tomas 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 Abulug.
| Age Group | Population | Share |
|---|---|---|
| Under 1 | 24 | 2.34% |
| 1 to 4 | 92 | 8.96% |
| 5 to 9 | 105 | 10.22% |
| 10 to 14 | 98 | 9.54% |
| 15 to 19 | 104 | 10.13% |
| 20 to 24 | 98 | 9.54% |
| 25 to 29 | 80 | 7.79% |
| 30 to 34 | 59 | 5.74% |
| 35 to 39 | 91 | 8.86% |
| 40 to 44 | 61 | 5.94% |
| 45 to 49 | 46 | 4.48% |
| 50 to 54 | 39 | 3.8% |
| 55 to 59 | 45 | 4.38% |
| 60 to 64 | 30 | 2.92% |
| 65 to 69 | 23 | 2.24% |
| 70 to 74 | 17 | 1.66% |
| 75 to 79 | 9 | 0.88% |
| 80 and over | 6 | 0.58% |
Young population (0-14) · 31.06%
Working-age population (15-64) · 63.58%
Older population (65+) · 5.36%
Household Trends
Household formation in Barangay Santo Tomas 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 Abulug.
| Census Date | Households | Avg. Size |
|---|---|---|
| 1990 May 1 | 150 | 5.95 |
| 1995 Sep 1 | 145 | 5.16 |
| 2000 May 1 | 159 | 4.8 |
| 2007 Aug 1 | 173 | 4.79 |
| 2010 May 1 | 191 | 4.63 |
| 2015 Aug 1 | 212 | 4.84 |
Location & Environment
Geographic coordinates, comparative elevation, and environmental risk profile.
Relative rank among Abulug's barangays by 2020 population.
Elevation profile, compared to the 7.9 m municipal median.
Barangay Santo Tomas is located at approximately 18.442, 121.4263 (18°26'31" N, 121°25'35" E) on Luzon , roughly 3.9 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.
ModerateAt roughly 3.9 m above sea level, low-lying areas here are more exposed to flooding and, near the coast, storm surge during major storms.
HighGeneral 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 Santo Tomas in municipality of Abulug, province of Cagayan 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 Abulug.
Nearest Barangays
Regional Culinary Highlights
Typically includes local vegetables and is often cooked with bagoong made from river fish rather than sea fish.
Ar-arusipA type of seaweed or "sea grapes" that is crisp and juicy, often served as a fresh salad with tomatoes and onions.
BambantiLiterally meaning "scarecrow," this is a unique local dish featuring meat (often duck or chicken) cooked in a variety of...
Frequently Asked Questions
Where is Barangay Santo Tomas located?
Barangay Santo Tomas is a barangay in Abulug, Cagayan, in the Cagayan Valley (Region II) of the Philippines. Registered under PSGC code 0201501014 with ZIP code 3517, it had a 2020 Census population of 1,091. That makes it the 14th most populous of Abulug's 20 barangays (3.1% of the municipal total of 35,347). It sits at about 3.9 m above sea level at coordinates 18.442, 121.4263.
What is the population of Barangay Santo Tomas?
1,091 as of the 2020 Census, the 14th largest of Abulug's 20 barangays (3.1% of the municipal total).
What is the PSGC code of Barangay Santo Tomas?
The PSGC code is 0201501014, a nine-digit identifier in the PSA classification.
What is the ZIP code of Barangay Santo Tomas?
ZIP 3517, covering Abulug and its barangays.
How many barangays does Abulug have?
20 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.