Naguilian, Municipality of Caoayan, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalityCaoayan
Postal code2702
Population (2020)1,238
Philippine major island(s)Luzon
Coordinates17.5538, 120.3960 (17° 33' North, 120° 24' East)
Estimated elevation above sea level10.4 meters (34.1 feet)

Naguilian is a barangay in the municipality of Caoayan, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 1,238. This represented 6.32% of the total population of Caoayan.

Demographics

Households

The household population of Naguilian in the 2015 Census was 1,432 broken down into 347 households or an average of 4.13 members per household.

details
Number of households in Naguilian (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
1,2762515.08
1,3222425.46
1,3002744.74
1,2472854.38
1,2833074.18
1,4323474.13

Population by age group

According to the 2015 Census, the age group with the highest population in Naguilian is 5 to 9, with 139 individuals. Conversely, the age group with the lowest population is Under 1, with 14 individuals.

details
Population of Naguilian by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1140.98%
1 to 4986.84%
5 to 91399.71%
10 to 141248.66%
15 to 191248.66%
20 to 241097.61%
25 to 291188.24%
30 to 341037.19%
35 to 39855.94%
40 to 44825.73%
45 to 49986.84%
50 to 54725.03%
55 to 59785.45%
60 to 64523.63%
65 to 69453.14%
70 to 74362.51%
75 to 79221.54%
80 and over332.30%
Total1,432100.00%
  • Youth Dependency Ratio: 40.72
  • Old Age Dependency Ratio: 14.77
  • Total Dependency Ratio: 55.49
  • Median Age: 29.58

Historical population

The population of Naguilian fell from 1,276 in 1990 to 1,238 in 2020, a decrease of 38 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 3.02%, or a decrease of 194 people, from the previous population of 1,432 in 2015.

Population of Naguilian (1990‑2020)
Census datePopulationGrowth rate
1,276
1,3220.67%
1,300-0.36%
1,247-0.57%
1,2831.04%
1,4322.11%
1,238-3.02%

Location

Naguilian is situated at approximately 17.5538, 120.3960, in the island of Luzon. Elevation at these coordinates is estimated at 10.4 meters or 34.1 feet above mean sea level.


Adjacent barangays

Naguilian 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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