San Isidro, Municipality of San Juan, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySan Juan
Postal code2731
Population (2020)825
Philippine major island(s)Luzon
Coordinates17.7196, 120.4237 (17° 43' North, 120° 25' East)
Estimated elevation above sea level5.9 meters (19.4 feet)

San Isidro is a barangay in the municipality of San Juan, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 825. This represented 3.09% of the total population of San Juan.

Demographics

Households

The household population of San Isidro in the 2015 Census was 828 broken down into 202 households or an average of 4.10 members per household.

details
Number of households in San Isidro (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
7031355.21
7291494.89
7411644.52
8431754.82
8281844.50
8282024.10

Population by age group

According to the 2015 Census, the age group with the highest population in San Isidro is 20 to 24, with 83 individuals. Conversely, the age group with the lowest population is Under 1, with 10 individuals.

details
Population of San Isidro by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1101.21%
1 to 4516.16%
5 to 9748.94%
10 to 14647.73%
15 to 19779.30%
20 to 248310.02%
25 to 29587.00%
30 to 34536.40%
35 to 39566.76%
40 to 44495.92%
45 to 49536.40%
50 to 54526.28%
55 to 59465.56%
60 to 64293.50%
65 to 69232.78%
70 to 74182.17%
75 to 79121.45%
80 and over202.42%
Total828100.00%
  • Youth Dependency Ratio: 35.79
  • Old Age Dependency Ratio: 13.13
  • Total Dependency Ratio: 48.92
  • Median Age: 29.74

Historical population

The population of San Isidro grew from 706 in 1990 to 825 in 2020, an increase of 119 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 0.08%, or a decrease of 3 people, from the previous population of 828 in 2015.

Population of San Isidro (1990‑2020)
Census datePopulationGrowth rate
706
7290.60%
7440.44%
8441.75%
829-0.65%
828-0.02%
825-0.08%

Location

San Isidro is situated at approximately 17.7196, 120.4237, in the island of Luzon. Elevation at these coordinates is estimated at 5.9 meters or 19.4 feet above mean sea level.


Adjacent barangays

San Isidro 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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