Silag, Municipality of Santa Maria, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySanta Maria
Postal code2705
Population (2020)1,414
Philippine major island(s)Luzon
Coordinates17.3637, 120.5157 (17° 22' North, 120° 31' East)
Estimated elevation above sea level25.6 meters (84.0 feet)

Silag is a barangay in the municipality of Santa Maria, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 1,414. This represented 4.71% of the total population of Santa Maria.

Demographics

Households

The household population of Silag in the 2015 Census was 1,399 broken down into 317 households or an average of 4.41 members per household.

details
Number of households in Silag (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
1,0142044.97
1,0182234.57
1,1372354.84
1,2662694.71
1,2902854.53
1,3993174.41

Population by age group

According to the 2015 Census, the age group with the highest population in Silag is 15 to 19, with 148 individuals. Conversely, the age group with the lowest population is Under 1, with 20 individuals.

details
Population of Silag by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1201.43%
1 to 41158.22%
5 to 91208.58%
10 to 141329.44%
15 to 1914810.58%
20 to 2414010.01%
25 to 291148.15%
30 to 34906.43%
35 to 39755.36%
40 to 44674.79%
45 to 49876.22%
50 to 54785.58%
55 to 59553.93%
60 to 64564.00%
65 to 69261.86%
70 to 74221.57%
75 to 79241.72%
80 and over302.14%
Total1,399100.00%
  • Youth Dependency Ratio: 42.53
  • Old Age Dependency Ratio: 11.21
  • Total Dependency Ratio: 53.74
  • Median Age: 26.07

Historical population

The population of Silag grew from 1,014 in 1990 to 1,414 in 2020, an increase of 400 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 0.22%, or an increase of 15 people, from the previous population of 1,399 in 2015.

Population of Silag (1990‑2020)
Census datePopulationGrowth rate
1,014
1,0180.07%
1,1372.40%
1,2661.49%
1,2900.69%
1,3991.56%
1,4140.22%

Location

Silag is situated at approximately 17.3637, 120.5157, in the island of Luzon. Elevation at these coordinates is estimated at 25.6 meters or 84.0 feet above mean sea level.


Adjacent barangays

Silag 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.
(Back to top)