Barangay Ballacayu is a barangay in San Pablo, Zamboanga del Sur, in the Zamboanga Peninsula (Region IX) of the Philippines. Registered under PSGC code 0203133003 with ZIP code 4000, it had a 2020 Census population of 2,184. That makes it the 54th most populous of San Pablo's 125 barangays (8.3% of the municipal total of 26,166). It sits at about 35.9 m above sea level at coordinates 17.4891, 121.8049.
Overview
Barangay Ballacayu is a local community situated within San Pablo, Zamboanga del Sur. 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 Ballacayu 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 Ballacayu is expanding, contracting, or holding steady within San Pablo, a signal that informs housing demand, school-age population, and the delivery of local public services.
| Census Date | Population | Growth | Net |
|---|---|---|---|
| 1990 May 1 | 1,219 | — | — |
| 1995 Sep 1 | 1,299 | +1.2% | 80 |
| 2000 May 1 | 1,575 | +4.22% | 276 |
| 2007 Aug 1 | 1,593 | +0.16% | 18 |
| 2010 May 1 | 1,829 | +5.16% | 236 |
| 2015 Aug 1 | 2,242 | +3.95% | 413 |
| 2020 May 1 | 2,184 | -0.55% | -58 |
Age Distribution (2015 Census)
The age profile of Barangay Ballacayu 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 Pablo.
| Age Group | Population | Share |
|---|---|---|
| Under 1 | 59 | 2.63% |
| 1 to 4 | 214 | 9.55% |
| 5 to 9 | 250 | 11.15% |
| 10 to 14 | 193 | 8.61% |
| 15 to 19 | 267 | 11.91% |
| 20 to 24 | 274 | 12.22% |
| 25 to 29 | 199 | 8.88% |
| 30 to 34 | 143 | 6.38% |
| 35 to 39 | 143 | 6.38% |
| 40 to 44 | 107 | 4.77% |
| 45 to 49 | 99 | 4.42% |
| 50 to 54 | 84 | 3.75% |
| 55 to 59 | 75 | 3.35% |
| 60 to 64 | 55 | 2.45% |
| 65 to 69 | 26 | 1.16% |
| 70 to 74 | 24 | 1.07% |
| 75 to 79 | 15 | 0.67% |
| 80 and over | 15 | 0.67% |
Young population (0-14) · 31.94%
Working-age population (15-64) · 64.5%
Older population (65+) · 3.57%
Household Trends
Household formation in Barangay Ballacayu 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 Pablo.
| Census Date | Households | Avg. Size |
|---|---|---|
| 1990 May 1 | 189 | 6.45 |
| 1995 Sep 1 | 237 | 5.46 |
| 2000 May 1 | 252 | 6.25 |
| 2007 Aug 1 | 312 | 5.11 |
| 2010 May 1 | 344 | 5.32 |
| 2015 Aug 1 | 395 | 5.68 |
Location & Environment
Geographic coordinates, comparative elevation, and environmental risk profile.
Relative rank among San Pablo's barangays by 2020 population.
Elevation profile, compared to the 109.6 m municipal median.
Barangay Ballacayu is located at approximately 17.4891, 121.8049 (17°29'21" N, 121°48'18" E) on Mindanao , roughly 35.9 meters above sea level.
Hazard Profile & Risk Context
Zamboanga Peninsula sits south of the usual tropical cyclone track and is struck far less often, though rare strong systems still occur.
LowZamboanga Peninsula is seismically active, with movement along nearby faults and trenches capable of producing strong earthquakes.
HighLocalized 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 Ballacayu in municipality of San Pablo, province of Zamboanga del Sur 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 Pablo.
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 Pablo
Frequently Asked Questions
Where is Barangay Ballacayu located?
Barangay Ballacayu is a barangay in San Pablo, Zamboanga del Sur, in the Zamboanga Peninsula (Region IX) of the Philippines. Registered under PSGC code 0203133003 with ZIP code 4000, it had a 2020 Census population of 2,184. That makes it the 54th most populous of San Pablo's 125 barangays (8.3% of the municipal total of 26,166). It sits at about 35.9 m above sea level at coordinates 17.4891, 121.8049.
What is the population of Barangay Ballacayu?
2,184 as of the 2020 Census, the 54th largest of San Pablo's 125 barangays (8.3% of the municipal total).
What is the PSGC code of Barangay Ballacayu?
The PSGC code is 0203133003, a nine-digit identifier in the PSA classification.
What is the ZIP code of Barangay Ballacayu?
ZIP 4000, covering San Pablo and its barangays.
How many barangays does San Pablo have?
125 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.