Casilagan Sur, Municipality of Banayoyo, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalityBanayoyo
Postal code2708
Population (2020)439
Philippine major island(s)Luzon
Coordinates17.2356, 120.4711 (17° 14' North, 120° 28' East)
Estimated elevation above sea level20.2 meters (66.3 feet)

Casilagan Sur is a barangay in the municipality of Banayoyo, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 439. This represented 5.54% of the total population of Banayoyo.

Demographics

Households

The household population of Casilagan Sur in the 2015 Census was 429 broken down into 108 households or an average of 3.97 members per household.

details
Number of households in Casilagan Sur (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
338595.73
314615.15
371745.01
423944.50
447974.61
4291083.97

Population by age group

According to the 2015 Census, the age group with the highest population in Casilagan Sur is 10 to 14, with 48 individuals. Conversely, the age group with the lowest population is Under 1, with 3 individuals.

details
Population of Casilagan Sur by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 130.70%
1 to 4296.76%
5 to 94710.96%
10 to 144811.19%
15 to 19358.16%
20 to 24194.43%
25 to 29317.23%
30 to 34388.86%
35 to 39399.09%
40 to 44276.29%
45 to 49337.69%
50 to 54153.50%
55 to 59163.73%
60 to 64112.56%
65 to 69112.56%
70 to 74184.20%
75 to 7940.93%
80 and over51.17%
Total429100.00%
  • Youth Dependency Ratio: 48.11
  • Old Age Dependency Ratio: 14.39
  • Total Dependency Ratio: 62.5
  • Median Age: 30.33

Historical population

The population of Casilagan Sur grew from 338 in 1990 to 439 in 2020, an increase of 101 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 0.49%, or an increase of 10 people, from the previous population of 429 in 2015.

Population of Casilagan Sur (1990‑2020)
Census datePopulationGrowth rate
338
314-1.37%
3713.64%
4231.83%
4472.03%
429-0.78%
4390.49%

Location

Casilagan Sur is situated at approximately 17.2356, 120.4711, in the island of Luzon. Elevation at these coordinates is estimated at 20.2 meters or 66.3 feet above mean sea level.


Adjacent barangays

Casilagan Sur 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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