Gongogong, Municipality of San Ildefonso, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySan Ildefonso
Postal code2728
Population (2020)350
Philippine major island(s)Luzon
Coordinates17.6174, 120.3946 (17° 37' North, 120° 24' East)
Estimated elevation above sea level10.3 meters (33.8 feet)

Gongogong is a barangay in the municipality of San Ildefonso, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 350. This represented 4.27% of the total population of San Ildefonso.

Demographics

Households

The household population of Gongogong in the 2015 Census was 336 broken down into 79 households or an average of 4.25 members per household.

details
Number of households in Gongogong (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
167305.57
198365.50
198385.21
306634.86
313634.97
336794.25

Population by age group

According to the 2015 Census, the age group with the highest population in Gongogong is 20 to 24, with 36 individuals. Conversely, the age group with the lowest population is 80 and over, with 2 individuals.

details
Population of Gongogong by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 172.08%
1 to 4257.44%
5 to 9339.82%
10 to 143410.12%
15 to 19278.04%
20 to 243610.71%
25 to 29195.65%
30 to 34226.55%
35 to 39278.04%
40 to 44308.93%
45 to 49185.36%
50 to 54102.98%
55 to 59144.17%
60 to 64175.06%
65 to 6951.49%
70 to 7451.49%
75 to 7951.49%
80 and over20.60%
Total336100.00%
  • Youth Dependency Ratio: 45
  • Old Age Dependency Ratio: 7.73
  • Total Dependency Ratio: 52.73
  • Median Age: 26.58

Historical population

The population of Gongogong grew from 167 in 1990 to 350 in 2020, an increase of 183 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 0.86%, or an increase of 14 people, from the previous population of 336 in 2015.

Population of Gongogong (1990‑2020)
Census datePopulationGrowth rate
167
1983.24%
1980.00%
3066.19%
3130.83%
3361.36%
3500.86%

Location

Gongogong is situated at approximately 17.6174, 120.3946, in the island of Luzon. Elevation at these coordinates is estimated at 10.3 meters or 33.8 feet above mean sea level.


Adjacent barangays

Gongogong shares a common border with the following barangay(s):

Notes

  1. Data on population, and households, are from the Philippine Statistics Authority.
  2. Postal code information is from the Philippine Postal Corporation.
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