Bigbiga, Municipality of Santiago, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySantiago
Postal code2707
Population (2020)638
Philippine major island(s)Luzon
Coordinates17.3067, 120.4437 (17° 18' North, 120° 27' East)
Estimated elevation above sea level30.2 meters (99.1 feet)

Bigbiga is a barangay in the municipality of Santiago, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 638. This represented 3.28% of the total population of Santiago.

Demographics

Households

The household population of Bigbiga in the 2015 Census was 655 broken down into 165 households or an average of 3.97 members per household.

details
Number of households in Bigbiga (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
482974.97
5271084.88
5551184.70
5951274.69
5851364.30
6551653.97

Population by age group

According to the 2015 Census, the age group with the highest population in Bigbiga is 15 to 19, with 68 individuals. Conversely, the age group with the lowest population is Under 1, with 6 individuals.

details
Population of Bigbiga by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 160.92%
1 to 4456.87%
5 to 9477.18%
10 to 14558.40%
15 to 196810.38%
20 to 24599.01%
25 to 29497.48%
30 to 34416.26%
35 to 39335.04%
40 to 44426.41%
45 to 49497.48%
50 to 54395.95%
55 to 59375.65%
60 to 64192.90%
65 to 69172.60%
70 to 74142.14%
75 to 79152.29%
80 and over203.05%
Total655100.00%
  • Youth Dependency Ratio: 35.09
  • Old Age Dependency Ratio: 15.14
  • Total Dependency Ratio: 50.23
  • Median Age: 29.85

Historical population

The population of Bigbiga grew from 482 in 1990 to 638 in 2020, an increase of 156 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 0.55%, or a decrease of 17 people, from the previous population of 655 in 2015.

Population of Bigbiga (1990‑2020)
Census datePopulationGrowth rate
482
5271.69%
5551.12%
5950.96%
585-0.62%
6552.18%
638-0.55%

Location

Bigbiga is situated at approximately 17.3067, 120.4437, in the island of Luzon. Elevation at these coordinates is estimated at 30.2 meters or 99.1 feet above mean sea level.


Adjacent barangays

Bigbiga 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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