Olo‑olo Sur, Municipality of Santiago, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySantiago
Postal code2707
Population (2020)452
Philippine major island(s)Luzon
Coordinates17.2742, 120.4474 (17° 16' North, 120° 27' East)
Estimated elevation above sea level18.0 meters (59.1 feet)

Olo‑olo Sur is a barangay in the municipality of Santiago, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 452. This represented 2.32% of the total population of Santiago.

Demographics

Households

The household population of Olo-olo Sur in the 2015 Census was 408 broken down into 101 households or an average of 4.04 members per household.

details
Number of households in Olo-olo Sur (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
381645.95
375784.81
407815.02
342814.22
397874.56
4081014.04

Population by age group

According to the 2015 Census, the age group with the highest population in Olo-olo Sur is 5 to 9, with 43 individuals. Conversely, the age groups with the lowest population are in the ranges Under 1, and 75 to 79, with 4 individuals.

details
Population of Olo-olo Sur by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 140.98%
1 to 4266.37%
5 to 94310.54%
10 to 14276.62%
15 to 19307.35%
20 to 24307.35%
25 to 29327.84%
30 to 34327.84%
35 to 39297.11%
40 to 44204.90%
45 to 49297.11%
50 to 54235.64%
55 to 59286.86%
60 to 64225.39%
65 to 6992.21%
70 to 7481.96%
75 to 7940.98%
80 and over122.94%
Total408100.00%
  • Youth Dependency Ratio: 36.36
  • Old Age Dependency Ratio: 12
  • Total Dependency Ratio: 48.36
  • Median Age: 31.88

Historical population

The population of Olo-olo Sur grew from 381 in 1990 to 452 in 2020, an increase of 71 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 2.18%, or an increase of 44 people, from the previous population of 408 in 2015.

Population of Olo-olo Sur (1990‑2020)
Census datePopulationGrowth rate
381
375-0.30%
4071.77%
342-2.37%
3975.58%
4080.52%
4522.18%

Location

Olo‑olo Sur is situated at approximately 17.2742, 120.4474, in the island of Luzon. Elevation at these coordinates is estimated at 18.0 meters or 59.1 feet above mean sea level.


Adjacent barangays

Olo‑olo 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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