Gainza, Province of Camarines Sur

Summary data
Typemunicipality
Island groupLuzon
RegionBicol Region (Region V)
ProvinceCamarines Sur
Barangay count8
Postal code4412
Coastal/Landlockedlandlocked
Marine waterbodiesnone (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)
Coordinates13° 37' North, 123° 8' East (13.6130, 123.1310)
Estimated elevation above sea level3.2 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
Local government units of Gainza
BarangayPopulation percentage (2020)Population (2020)Population (2015)Change (2015‑2020)Annual Population Growth Rate (2015‑2020)
Cagbunga16.19%1,8761,7894.86%1.00%
Dahilig11.13%1,2891,2890.00%0.00%
District I11.42%1,3231,346-1.71%-0.36%
District II10.68%1,2371,2250.98%0.21%
Loob10.83%1,2541,378-9.00%-1.97%
Malbong15.74%1,8231,60913.30%2.66%
Namuat4.58%5305280.38%0.08%
Sampaloc19.44%2,2522,0987.34%1.50%
Gainza Total11,58411,2622.86%0.60%

Economy

The annual regular revenue of Gainza for the fiscal year of 2016 was 41,725,880.60.

details
Annual regular income of Gainza (2009‑2016)
Fiscal YearAnnual Regular IncomeChange
200923,147,916.05
201024,594,729.406.25%
201126,896,202.989.36%
201227,075,085.080.67%
201329,318,299.508.29%
201433,265,418.6813.46%
201537,940,466.7814.05%
201641,725,880.609.98%

End notes:

  • Annual Regular Income = Locally Sourced Revenue + Internal Revenue Allotment (IRA) Current Year + Other Shares from National Tax Collection
  • Locally Sourced Revenue = Real Property Tax (General Fund) + Tax on Business + Other Taxes + Regulatory Fees + Service/User Charges + Receipts from Economic Enterprises

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.

details
Number of households in Gainza (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
7,0911,2285.77
7,7431,3825.60
8,4121,5295.50
9,4041,8305.14
10,3412,0205.12
11,2522,2515.00

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.

details
Population of Gainza by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 12241.99%
1 to 41,1129.87%
5 to 91,32311.75%
10 to 141,33111.82%
15 to 191,27011.28%
20 to 249018.00%
25 to 297756.88%
30 to 347126.32%
35 to 396745.98%
40 to 446225.52%
45 to 495464.85%
50 to 544514.00%
55 to 593843.41%
60 to 643012.67%
65 to 692592.30%
70 to 741671.48%
75 to 791171.04%
80 and over930.83%
Total11,262100.00%
  • Youth Dependency Ratio: 60.13
  • Old Age Dependency Ratio: 9.58
  • Total Dependency Ratio: 69.71
  • Median Age: 22.06

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 growth rate of 0.60%, or an increase of 322 people, from the previous population of 11,262 in 2015.

details
Population of Gainza (1903‑2020)
Census datePopulationGrowth rate
2,149
1,575-1.94%
2,4612.26%
2,6720.85%
5,0685.79%
4,823-0.48%
5,9314.24%
6,2120.93%
7,0951.34%
7,7431.65%
8,4121.79%
9,4041.55%
10,3453.53%
11,2621.63%
11,5840.60%

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

Nearest cities

Distance from Manila: 257.31 kilometers (159.88 miles) to the West‑Northwest (N65°W)

Notes

  1. Unless otherwise specified, population count (excluding percentages), household data, and land area figures are derived from the Philippine Statistics Authority.
  2. Data on registered voters is from the Commission on Elections.
  3. Data on annual regular income is from the Bureau of Local Government Finance, Department of Finance
  4. Postal code information is from the Philippine Postal Corporation.
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