Casilagan, Municipality of Santa Cruz, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySanta Cruz
Postal code2713
Population (2020)891
Philippine major island(s)Luzon
Coordinates17.0138, 120.4554 (17° 1' North, 120° 27' East)
Estimated elevation above sea level12.2 meters (40.0 feet)

Casilagan is a barangay in the municipality of Santa Cruz, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 891. This represented 2.15% of the total population of Santa Cruz.

Demographics

Households

The household population of Casilagan in the 2015 Census was 842 broken down into 188 households or an average of 4.48 members per household.

details
Number of households in Casilagan (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
5761035.59
5941224.87
7211425.08
6861634.21
7311694.33
8421884.48

Population by age group

According to the 2015 Census, the age group with the highest population in Casilagan is 10 to 14, with 91 individuals. Conversely, the age group with the lowest population is 75 to 79, with 10 individuals.

details
Population of Casilagan by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1192.26%
1 to 4657.72%
5 to 9688.08%
10 to 149110.81%
15 to 198510.10%
20 to 24799.38%
25 to 29718.43%
30 to 34445.23%
35 to 39475.58%
40 to 44445.23%
45 to 49607.13%
50 to 54576.77%
55 to 59364.28%
60 to 64192.26%
65 to 69161.90%
70 to 74131.54%
75 to 79101.19%
80 and over182.14%
Total842100.00%
  • Youth Dependency Ratio: 44.83
  • Old Age Dependency Ratio: 10.52
  • Total Dependency Ratio: 55.35
  • Median Age: 25.99

Historical population

The population of Casilagan grew from 576 in 1990 to 891 in 2020, an increase of 315 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 1.20%, or an increase of 49 people, from the previous population of 842 in 2015.

Population of Casilagan (1990‑2020)
Census datePopulationGrowth rate
576
5940.58%
7214.24%
686-0.68%
7312.34%
8422.73%
8911.20%

Location

Casilagan is situated at approximately 17.0138, 120.4554, in the island of Luzon. Elevation at these coordinates is estimated at 12.2 meters or 40.0 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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