Casili, Municipality of Santo Domingo, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySanto Domingo
Postal code2729
Population (2020)388
Philippine major island(s)Luzon
Coordinates17.6648, 120.3755 (17° 40' North, 120° 23' East)
Estimated elevation above sea level13.2 meters (43.3 feet)

Casili is a barangay in the municipality of Santo Domingo, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 388. This represented 1.34% of the total population of Santo Domingo.

Demographics

Households

The household population of Casili in the 2015 Census was 331 broken down into 86 households or an average of 3.85 members per household.

details
Number of households in Casili (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
308605.13
338615.54
374705.34
378794.78
374814.62
331863.85

Population by age group

According to the 2015 Census, the age group with the highest population in Casili is 20 to 24, with 37 individuals. Conversely, the age group with the lowest population is Under 1, with 5 individuals.

details
Population of Casili by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 151.51%
1 to 4309.06%
5 to 9288.46%
10 to 14257.55%
15 to 193610.88%
20 to 243711.18%
25 to 29257.55%
30 to 34206.04%
35 to 39288.46%
40 to 44113.32%
45 to 49144.23%
50 to 54154.53%
55 to 59133.93%
60 to 64113.32%
65 to 69113.32%
70 to 74103.02%
75 to 7961.81%
80 and over61.81%
Total331100.00%
  • Youth Dependency Ratio: 41.9
  • Old Age Dependency Ratio: 15.71
  • Total Dependency Ratio: 57.61
  • Median Age: 25.90

Historical population

The population of Casili grew from 308 in 1990 to 388 in 2020, an increase of 80 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 3.40%, or an increase of 57 people, from the previous population of 331 in 2015.

Population of Casili (1990‑2020)
Census datePopulationGrowth rate
308
3381.76%
3742.19%
3780.15%
374-0.39%
331-2.30%
3883.40%

Location

Casili is situated at approximately 17.6648, 120.3755, in the island of Luzon. Elevation at these coordinates is estimated at 13.2 meters or 43.3 feet above mean sea level.


Adjacent barangays

Casili 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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