Tiagan, Municipality of San Emilio, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySan Emilio
Postal code2722
Population (2020)1,524
Philippine major island(s)Luzon
Coordinates17.2240, 120.6149 (17° 13' North, 120° 37' East)
Estimated elevation above sea level410.5 meters (1,346.8 feet)

Tiagan is a barangay in the municipality of San Emilio, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 1,524. This represented 21.15% of the total population of San Emilio.

Demographics

Households

The household population of Tiagan in the 2015 Census was 1,697 broken down into 337 households or an average of 5.04 members per household.

details
Number of households in Tiagan (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
1,1932105.68
1,2582445.16
1,4012665.27
1,4973084.86
1,6433035.42
1,6973375.04

Population by age group

According to the 2015 Census, the age group with the highest population in Tiagan is 10 to 14, with 193 individuals. Conversely, the age group with the lowest population is 70 to 74, with 30 individuals.

details
Population of Tiagan by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1331.93%
1 to 41337.78%
5 to 917510.23%
10 to 1419311.29%
15 to 191247.25%
20 to 241267.37%
25 to 291086.32%
30 to 341347.84%
35 to 391297.54%
40 to 441025.96%
45 to 49965.61%
50 to 54784.56%
55 to 59633.68%
60 to 64543.16%
65 to 69462.69%
70 to 74301.75%
75 to 79412.40%
80 and over452.63%
Total1,710100.00%
  • Youth Dependency Ratio: 52.66
  • Old Age Dependency Ratio: 15.98
  • Total Dependency Ratio: 68.64
  • Median Age: 28.29

Historical population

The population of Tiagan grew from 1,193 in 1990 to 1,524 in 2020, an increase of 331 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 2.39%, or a decrease of 186 people, from the previous population of 1,710 in 2015.

Population of Tiagan (1990‑2020)
Census datePopulationGrowth rate
1,193
1,2581.00%
1,4022.35%
1,4980.92%
1,6473.51%
1,7100.72%
1,524-2.39%

Location

Tiagan is situated at approximately 17.2240, 120.6149, in the island of Luzon. Elevation at these coordinates is estimated at 410.5 meters or 1,346.8 feet above mean sea level.


Adjacent barangays

Tiagan 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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