Gainza, Province of Camarines Sur
| Type | municipality |
|---|---|
| Island group | Luzon |
| Region | Bicol Region (Region V) |
| Province | Camarines Sur |
| Barangay count | 8 |
| Postal code | 4412 |
| Coastal/Landlocked | landlocked |
| Marine waterbodies | none (landlocked) |
| Philippine major island(s) | Luzon |
| Area (2013) | 14.75 km2 (5.70 sq mi) |
| Population (2020) | 11,584 |
| Density (2020) | 785 / km2 (2,032 / sq mi) |
| Coordinates | 13° 37' North, 123° 8' East (13.6130, 123.1310) |
| Estimated elevation above sea level | 3.2 meters (10.4 feet) |
Gainza is a landlocked municipality in the coastal province of Camarines Sur.
The municipality has a land area of 14.75 square kilometers or 5.70 square miles which constitutes 0.27% of Camarines Sur's total area. Its population as determined by the 2020 Census was 11,584. This represented 0.56% of the total population of Camarines Sur province, or 0.19% of the overall population of the Bicol Region. Based on these figures, the population density is computed at 785 inhabitants per square kilometer or 2,032 inhabitants per square mile.
Barangays
Gainza has 8 barangays as shown in the following table.
Demographic profile of barangays
| Barangay | Population percentage (2020) | Population (2020) | Population (2015) | Change (2015‑2020) | Annual Population Growth Rate (2015‑2020) |
|---|---|---|---|---|---|
| Cagbunga | 16.19% | 1,876 | 1,789 | 4.86% | 1.00% |
| Dahilig | 11.13% | 1,289 | 1,289 | 0.00% | 0.00% |
| District I | 11.42% | 1,323 | 1,346 | -1.71% | -0.36% |
| District II | 10.68% | 1,237 | 1,225 | 0.98% | 0.21% |
| Loob | 10.83% | 1,254 | 1,378 | -9.00% | -1.97% |
| Malbong | 15.74% | 1,823 | 1,609 | 13.30% | 2.66% |
| Namuat | 4.58% | 530 | 528 | 0.38% | 0.08% |
| Sampaloc | 19.44% | 2,252 | 2,098 | 7.34% | 1.50% |
| Gainza Total | 11,584 | 11,262 | 2.86% | 0.60% | |
Economy
The annual regular revenue of Gainza for the fiscal year of 2016 was ₱41,725,880.60.
Historical annual regular income data
| Fiscal Year | Annual Regular Income | Change |
|---|---|---|
| 2009 | 23,147,916.05 | – |
| 2010 | 24,594,729.40 | 6.25% |
| 2011 | 26,896,202.98 | 9.36% |
| 2012 | 27,075,085.08 | 0.67% |
| 2013 | 29,318,299.50 | 8.29% |
| 2014 | 33,265,418.68 | 13.46% |
| 2015 | 37,940,466.78 | 14.05% |
| 2016 | 41,725,880.60 | 9.98% |
End notes:
| ||
Demographics
Households
The household population of Gainza in the 2015 Census was 11,252 broken down into 2,251 households or an average of 5.00 members per household.
Trends in household population and size
| Census date | Household population | Number of households | Average household size |
|---|---|---|---|
| 7,091 | 1,228 | 5.77 | |
| 7,743 | 1,382 | 5.60 | |
| 8,412 | 1,529 | 5.50 | |
| 9,404 | 1,830 | 5.14 | |
| 10,341 | 2,020 | 5.12 | |
| 11,252 | 2,251 | 5.00 |
Population by age group
According to the 2015 Census, the age group with the highest population in Gainza is 10 to 14, with 1,331 individuals. Conversely, the age group with the lowest population is 80 and over, with 93 individuals.
Age distribution
| Age group | Population (2015) | Age group percentage |
|---|---|---|
| Under 1 | 224 | 1.99% |
| 1 to 4 | 1,112 | 9.87% |
| 5 to 9 | 1,323 | 11.75% |
| 10 to 14 | 1,331 | 11.82% |
| 15 to 19 | 1,270 | 11.28% |
| 20 to 24 | 901 | 8.00% |
| 25 to 29 | 775 | 6.88% |
| 30 to 34 | 712 | 6.32% |
| 35 to 39 | 674 | 5.98% |
| 40 to 44 | 622 | 5.52% |
| 45 to 49 | 546 | 4.85% |
| 50 to 54 | 451 | 4.00% |
| 55 to 59 | 384 | 3.41% |
| 60 to 64 | 301 | 2.67% |
| 65 to 69 | 259 | 2.30% |
| 70 to 74 | 167 | 1.48% |
| 75 to 79 | 117 | 1.04% |
| 80 and over | 93 | 0.83% |
| Total | 11,262 | 100.00% |
| ||
Historical population
The population of Gainza grew from 2,149 in 1903 to 11,584 in 2020, an increase of 9,435 people over the course of 117 years. The latest census figures in 2020 denote a positive annualized growth rate of 0.60%, or an increase of 322 people, from the previous population of 11,262 in 2015.
Trends in population growth
| Census date | Population | Annualized Growth Rate |
|---|---|---|
| 2,149 | – | |
| 1,575 | -1.94% | |
| 2,461 | 2.26% | |
| 2,672 | 0.85% | |
| 5,068 | 5.79% | |
| 4,823 | -0.48% | |
| 5,931 | 4.24% | |
| 6,212 | 0.93% | |
| 7,095 | 1.34% | |
| 7,743 | 1.65% | |
| 8,412 | 1.79% | |
| 9,404 | 1.55% | |
| 10,345 | 3.53% | |
| 11,262 | 1.63% | |
| 11,584 | 0.60% |
The total number of registered voters or electorate in Gainza for the year 2019 was 8,859, broken down into 4,431 males and 4,428 females.
Location
The municipal center of Gainza is situated at approximately 13° 37' North, 123° 8' East, in the island of Luzon. Elevation at these coordinates is estimated at 3.2 meters or 10.4 feet above mean sea level.
Distances
Based on the great-circle distance (the shortest distance between two points over the surface of the Earth), the cities closest to Gainza are Naga, Camarines Sur, Iriga, Camarines Sur, Ligao, Albay, Tabaco, Albay, Legazpi, Albay, and Sorsogon City, Sorsogon. The nearest municipalities are Camaligan, Camarines Sur, Milaor, Camarines Sur, Canaman, Camarines Sur, San Fernando, Camarines Sur, Minalabac, Camarines Sur, and Magarao, Camarines Sur. Its distance from the national capital is 257.31 kilometers (159.88 miles). The following list delineates such distance measurements.
great-circle distance
Nearest towns
- Camaligan, Camarines Sur, 2.28 kilometers (1.41 miles) to the East‑Northeast (N76°E)
- Milaor, Camarines Sur, 4.54 kilometers (2.82 miles) to the East‑Southeast (S63°E)
- Canaman, Camarines Sur, 4.60 kilometers (2.86 miles) to the Northeast (N40°E)
- San Fernando, Camarines Sur, 5.71 kilometers (3.55 miles) to the South (S0°E)
- Minalabac, Camarines Sur, 6.72 kilometers (4.17 miles) to the Southeast (S42°E)
- Magarao, Camarines Sur, 6.81 kilometers (4.23 miles) to the Northeast (N42°E)
Nearest cities
- Naga, Camarines Sur, 4.73 kilometers (2.94 miles) to the East‑Northeast (N78°E)
- Iriga, Camarines Sur, 36.20 kilometers (22.49 miles) to the Southeast (S54°E)
- Ligao, Albay, 59.48 kilometers (36.96 miles) to the Southeast (S46°E)
- Tabaco, Albay, 69.56 kilometers (43.22 miles) to the East‑Southeast (S66°E)
- Legazpi, Albay, 82.96 kilometers (51.55 miles) to the Southeast (S50°E)
- Sorsogon City, Sorsogon, 117.53 kilometers (73.03 miles) to the Southeast (S53°E)
Distance from Manila: 257.31 kilometers (159.88 miles) to the West‑Northwest (N65°W)
Notes
- Unless otherwise specified, population count (excluding percentages), household data, and land area figures are derived from the Philippine Statistics Authority.
- Data on registered voters is from the Commission on Elections.
- Data on annual regular income is from the Bureau of Local Government Finance, Department of Finance
- Postal code information is from the Philippine Postal Corporation.