Barangay I, City of Vigan, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
CityVigan
Postal code2700
Population (2020)393
Philippine major island(s)Luzon
Coordinates17.5740, 120.3881 (17° 34' North, 120° 23' East)
Estimated elevation above sea level16.6 meters (54.5 feet)

Barangay I, formerly Poblacion, is a barangay in the city of Vigan, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 393. This represented 0.73% of the total population of Vigan.

Demographics

Households

The household population of Barangay I in the 2015 Census was 558 broken down into 136 households or an average of 4.10 members per household.

details
Number of households in Barangay I (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
1,2642405.27
1,0992314.76
8741934.53
7111504.74
5701404.07
5581364.10

Population by age group

According to the 2015 Census, the age group with the highest population in Barangay I is 25 to 29, with 53 individuals. Conversely, the age group with the lowest population is Under 1, with 4 individuals.

details
Population of Barangay I by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 140.71%
1 to 4335.82%
5 to 9346.00%
10 to 14508.82%
15 to 19356.17%
20 to 24457.94%
25 to 29539.35%
30 to 34396.88%
35 to 39346.00%
40 to 44356.17%
45 to 49203.53%
50 to 54335.82%
55 to 59468.11%
60 to 64366.35%
65 to 69234.06%
70 to 74162.82%
75 to 79142.47%
80 and over173.00%
Total567100.00%
  • Youth Dependency Ratio: 32.18
  • Old Age Dependency Ratio: 18.62
  • Total Dependency Ratio: 50.8
  • Median Age: 33.78

Historical population

The population of Barangay I fell from 1,279 in 1990 to 393 in 2020, a decrease of 886 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 7.43%, or a decrease of 174 people, from the previous population of 567 in 2015.

Population of Barangay I (1990‑2020)
Census datePopulationGrowth rate
1,279
1,136-2.20%
891-5.08%
742-2.49%
570-9.15%
567-0.10%
393-7.43%

Location

Barangay I is situated at approximately 17.5740, 120.3881, in the island of Luzon. Elevation at these coordinates is estimated at 16.6 meters or 54.5 feet above mean sea level.


Adjacent barangays

Barangay I 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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