Duplas, Municipality of San Juan, Province of La Union

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceLa Union
MunicipalitySan Juan
Postal code2514
Population (2020)646
Philippine major island(s)Luzon
Coordinates16.6576, 120.4262 (16° 39' North, 120° 26' East)
Estimated elevation above sea level36.2 meters (118.8 feet)

Duplas is a barangay in the municipality of San Juan, in the province of La Union. Its population as determined by the 2020 Census was 646. This represented 1.59% of the total population of San Juan.

Demographics

Households

The household population of Duplas in the 2015 Census was 652 broken down into 157 households or an average of 4.15 members per household.

details
Number of households in Duplas (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
5141074.80
5321154.63
5311084.92
5751294.46
5911384.28
6521574.15

Population by age group

According to the 2015 Census, the age group with the highest population in Duplas is 5 to 9, with 81 individuals. Conversely, the age group with the lowest population is Under 1, with 6 individuals.

details
Population of Duplas by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 160.92%
1 to 4467.06%
5 to 98112.42%
10 to 14507.67%
15 to 19599.05%
20 to 24477.21%
25 to 29619.36%
30 to 34507.67%
35 to 39477.21%
40 to 44375.67%
45 to 49314.75%
50 to 54223.37%
55 to 59375.67%
60 to 64203.07%
65 to 69142.15%
70 to 74172.61%
75 to 79111.69%
80 and over162.45%
Total652100.00%
  • Youth Dependency Ratio: 44.53
  • Old Age Dependency Ratio: 14.11
  • Total Dependency Ratio: 58.64
  • Median Age: 28.03

Historical population

The population of Duplas grew from 514 in 1990 to 646 in 2020, an increase of 132 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 0.19%, or a decrease of 6 people, from the previous population of 652 in 2015.

Population of Duplas (1990‑2020)
Census datePopulationGrowth rate
514
5320.65%
531-0.04%
5751.10%
5911.00%
6521.89%
646-0.19%

Location

Duplas is situated at approximately 16.6576, 120.4262, in the island of Luzon. Elevation at these coordinates is estimated at 36.2 meters or 118.8 feet above mean sea level.


Adjacent barangays

Duplas 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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