Casilagan, Municipality of Nagbukel, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalityNagbukel
Postal code2725
Population (2020)330
Philippine major island(s)Luzon
Coordinates17.4575, 120.5576 (17° 27' North, 120° 33' East)
Estimated elevation above sea level36.3 meters (119.1 feet)

Casilagan is a barangay in the municipality of Nagbukel, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 330. This represented 6.04% of the total population of Nagbukel.

Demographics

Households

The household population of Casilagan in the 2015 Census was 308 broken down into 68 households or an average of 4.53 members per household.

details
Number of households in Casilagan (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
203355.80
238415.80
255445.80
272535.13
299614.90
308684.53

Population by age group

According to the 2015 Census, the age group with the highest population in Casilagan is 20 to 24, with 41 individuals. Conversely, the age group with the lowest population is Under 1, with 2 individuals.

details
Population of Casilagan by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 120.65%
1 to 43310.71%
5 to 9278.77%
10 to 143210.39%
15 to 19258.12%
20 to 244113.31%
25 to 29278.77%
30 to 34216.82%
35 to 39154.87%
40 to 44165.19%
45 to 49154.87%
50 to 54154.87%
55 to 59113.57%
60 to 6492.92%
65 to 6941.30%
70 to 7430.97%
75 to 7972.27%
80 and over51.62%
Total308100.00%
  • Youth Dependency Ratio: 48.21
  • Old Age Dependency Ratio: 9.74
  • Total Dependency Ratio: 57.95
  • Median Age: 24.27

Historical population

The population of Casilagan grew from 203 in 1990 to 330 in 2020, an increase of 127 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 1.46%, or an increase of 22 people, from the previous population of 308 in 2015.

Population of Casilagan (1990‑2020)
Census datePopulationGrowth rate
203
2383.02%
2551.49%
2720.89%
2993.50%
3080.57%
3301.46%

Location

Casilagan is situated at approximately 17.4575, 120.5576, in the island of Luzon. Elevation at these coordinates is estimated at 36.3 meters or 119.1 feet above mean sea level.


Adjacent barangays

Casilagan 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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