Barangay Alianza is a barangay in Bago City, Negros Occidental, in the Western Visayas (Region VI) of the Philippines. Registered under PSGC code 1804502002 with ZIP code 6101, it had a 2020 Census population of 3,170. That makes it the 22nd most populous of Bago City's 24 barangays (1.6% of the municipal total of 192,993). It sits at about 33 m above sea level at coordinates 10.4734, 122.9301.
Overview
Barangay Alianza is a local community situated within Bago City, Negros Occidental. 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 Alianza 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 Alianza is expanding, contracting, or holding steady within Bago City, a signal that informs housing demand, school-age population, and the delivery of local public services.
| Census Date | Population | Growth | Net |
|---|---|---|---|
| 1990 May 1 | 1,926 | — | — |
| 1995 Sep 1 | 2,090 | +1.54% | 164 |
| 2000 May 1 | 2,485 | +3.78% | 395 |
| 2007 Aug 1 | 2,680 | +1.05% | 195 |
| 2010 May 1 | 2,847 | +2.22% | 167 |
| 2015 Aug 1 | 3,211 | +2.32% | 364 |
| 2020 May 1 | 3,170 | -0.27% | -41 |
Age Distribution (2015 Census)
The age profile of Barangay Alianza 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 Bago City.
| Age Group | Population | Share |
|---|---|---|
| Under 1 | 52 | 1.62% |
| 1 to 4 | 240 | 7.47% |
| 5 to 9 | 359 | 11.18% |
| 10 to 14 | 357 | 11.12% |
| 15 to 19 | 260 | 8.1% |
| 20 to 24 | 308 | 9.59% |
| 25 to 29 | 257 | 8% |
| 30 to 34 | 229 | 7.13% |
| 35 to 39 | 219 | 6.82% |
| 40 to 44 | 205 | 6.38% |
| 45 to 49 | 195 | 6.07% |
| 50 to 54 | 147 | 4.58% |
| 55 to 59 | 112 | 3.49% |
| 60 to 64 | 99 | 3.08% |
| 65 to 69 | 68 | 2.12% |
| 70 to 74 | 54 | 1.68% |
| 75 to 79 | 26 | 0.81% |
| 80 and over | 24 | 0.75% |
Young population (0-14) · 31.39%
Working-age population (15-64) · 63.25%
Older population (65+) · 5.36%
Household Trends
Household formation in Barangay Alianza 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 Bago City.
| Census Date | Households | Avg. Size |
|---|---|---|
| 1990 May 1 | 362 | 5.32 |
| 1995 Sep 1 | 444 | 4.64 |
| 2000 May 1 | 532 | 4.67 |
| 2007 Aug 1 | 562 | 4.77 |
| 2010 May 1 | 642 | 4.43 |
| 2015 Aug 1 | 735 | 4.37 |
Location & Environment
Geographic coordinates, comparative elevation, and environmental risk profile.
Relative rank among Bago City's barangays by 2020 population.
Elevation profile, compared to the 26.3 m municipal median.
Barangay Alianza is located at approximately 10.4734, 122.9301 (10°28'24" N, 122°55'48" E) on Visayas , roughly 33 meters above sea level.
Hazard Profile & Risk Context
Western Visayas is exposed to several tropical cyclones each season, less often than the eastern and northern seaboards.
ModerateWestern Visayas 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 Alianza in municipality of Bago City, province of Negros Occidental 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 Bago City.
Nearest Barangays
Other Barangays in Bago City
Frequently Asked Questions
Where is Barangay Alianza located?
Barangay Alianza is a barangay in Bago City, Negros Occidental, in the Western Visayas (Region VI) of the Philippines. Registered under PSGC code 1804502002 with ZIP code 6101, it had a 2020 Census population of 3,170. That makes it the 22nd most populous of Bago City's 24 barangays (1.6% of the municipal total of 192,993). It sits at about 33 m above sea level at coordinates 10.4734, 122.9301.
What is the population of Barangay Alianza?
3,170 as of the 2020 Census, the 22nd largest of Bago City's 24 barangays (1.6% of the municipal total).
What is the PSGC code of Barangay Alianza?
The PSGC code is 1804502002, a nine-digit identifier in the PSA classification.
What is the ZIP code of Barangay Alianza?
ZIP 6101, covering Bago City and its barangays.
How many barangays does Bago City have?
24 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.