Ayusan, Municipality of Santa Lucia, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySanta Lucia
Postal code2712
Population (2020)1,213
Philippine major island(s)Luzon
Coordinates17.1182, 120.4466 (17° 7' North, 120° 27' East)
Estimated elevation above sea level8.1 meters (26.6 feet)

Ayusan, formerly Poblacion, is a barangay in the municipality of Santa Lucia, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 1,213. This represented 4.67% of the total population of Santa Lucia.

Demographics

Households

The household population of Ayusan in the 2015 Census was 1,149 broken down into 252 households or an average of 4.56 members per household.

details
Number of households in Ayusan (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
8481615.27
9411775.32
1,0562144.93
1,1042344.72
1,1322464.60
1,1492524.56

Population by age group

According to the 2015 Census, the age group with the highest population in Ayusan is 5 to 9, with 111 individuals. Conversely, the age group with the lowest population is 75 to 79, with 10 individuals.

details
Population of Ayusan by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1232.00%
1 to 4917.92%
5 to 91119.66%
10 to 141059.14%
15 to 191079.31%
20 to 24968.36%
25 to 29958.27%
30 to 34948.18%
35 to 39574.96%
40 to 44645.57%
45 to 49847.31%
50 to 54635.48%
55 to 59403.48%
60 to 64312.70%
65 to 69413.57%
70 to 74232.00%
75 to 79100.87%
80 and over141.22%
Total1,149100.00%
  • Youth Dependency Ratio: 45.14
  • Old Age Dependency Ratio: 12.04
  • Total Dependency Ratio: 57.18
  • Median Age: 27.18

Historical population

The population of Ayusan grew from 859 in 1990 to 1,213 in 2020, an increase of 354 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 1.15%, or an increase of 64 people, from the previous population of 1,149 in 2015.

Population of Ayusan (1990‑2020)
Census datePopulationGrowth rate
859
9471.84%
1,0642.53%
1,1040.51%
1,1320.92%
1,1490.28%
1,2131.15%

Location

Ayusan is situated at approximately 17.1182, 120.4466, in the island of Luzon. Elevation at these coordinates is estimated at 8.1 meters or 26.6 feet above mean sea level.


Adjacent barangays

Ayusan 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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