Otol‑Patac, Municipality of San Ildefonso, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySan Ildefonso
Postal code2728
Population (2020)597
Philippine major island(s)Luzon
Coordinates17.6196, 120.3829 (17° 37' North, 120° 23' East)
Estimated elevation above sea level7.5 meters (24.6 feet)

Otol‑Patac is a barangay in the municipality of San Ildefonso, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 597. This represented 7.29% of the total population of San Ildefonso.

Demographics

Households

The household population of Otol-Patac in the 2015 Census was 486 broken down into 111 households or an average of 4.38 members per household.

details
Number of households in Otol-Patac (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
217395.56
269485.60
289555.25
371715.23
393854.62
4861114.38

Population by age group

According to the 2015 Census, the age group with the highest population in Otol-Patac is 5 to 9, with 59 individuals. Conversely, the age group with the lowest population is 80 and over, with 1 individual.

details
Population of Otol-Patac by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 171.44%
1 to 45411.11%
5 to 95912.14%
10 to 14469.47%
15 to 19295.97%
20 to 24489.88%
25 to 29469.47%
30 to 34459.26%
35 to 39316.38%
40 to 44224.53%
45 to 49204.12%
50 to 54244.94%
55 to 59183.70%
60 to 64102.06%
65 to 69122.47%
70 to 74102.06%
75 to 7940.82%
80 and over10.21%
Total486100.00%
  • Youth Dependency Ratio: 56.66
  • Old Age Dependency Ratio: 9.22
  • Total Dependency Ratio: 65.88
  • Median Age: 25.00

Historical population

The population of Otol-Patac grew from 217 in 1990 to 597 in 2020, an increase of 380 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 4.42%, or an increase of 111 people, from the previous population of 486 in 2015.

Population of Otol-Patac (1990‑2020)
Census datePopulationGrowth rate
217
2694.11%
2891.55%
3713.50%
3932.12%
4864.13%
5974.42%

Location

Otol‑Patac is situated at approximately 17.6196, 120.3829, in the island of Luzon. Elevation at these coordinates is estimated at 7.5 meters or 24.6 feet above mean sea level.


Adjacent barangays

Otol‑Patac 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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