Pandayan, Municipality of San Juan, Province of Ilocos Sur
| Type | barangay |
|---|---|
| Island group | Luzon |
| Region | Ilocos Region (Region I) |
| Province | Ilocos Sur |
| Municipality | San Juan |
| Postal code | 2731 |
| Population (2020) | 577 |
| Philippine major island(s) | Luzon |
| Coordinates | 17.7451, 120.4563 (17° 45' North, 120° 27' East) |
| Estimated elevation above sea level | 18.5 meters (60.7 feet) |
Pandayan, formerly Poblacion, is a barangay in the municipality of San Juan, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 577. This represented 2.16% of the total population of San Juan.
Demographics
Households
The household population of Pandayan in the 2015 Census was 797 broken down into 157 households or an average of 5.08 members per household.
Trends in household population and size
| Census date | Household population | Number of households | Average household size |
|---|---|---|---|
| 610 | 106 | 5.75 | |
| 608 | 118 | 5.15 | |
| 666 | 136 | 4.90 | |
| 674 | 145 | 4.65 | |
| 815 | 166 | 4.91 | |
| 797 | 157 | 5.08 |
Population by age group
According to the 2015 Census, the age group with the highest population in Pandayan is 10 to 14, with 90 individuals. Conversely, the age groups with the lowest population are in the ranges 70 to 74, and 80 and over, with 10 individuals.
Age distribution
| Age group | Population (2015) | Age group percentage |
|---|---|---|
| Under 1 | 15 | 1.88% |
| 1 to 4 | 39 | 4.89% |
| 5 to 9 | 69 | 8.66% |
| 10 to 14 | 90 | 11.29% |
| 15 to 19 | 76 | 9.54% |
| 20 to 24 | 73 | 9.16% |
| 25 to 29 | 63 | 7.90% |
| 30 to 34 | 60 | 7.53% |
| 35 to 39 | 53 | 6.65% |
| 40 to 44 | 51 | 6.40% |
| 45 to 49 | 53 | 6.65% |
| 50 to 54 | 44 | 5.52% |
| 55 to 59 | 31 | 3.89% |
| 60 to 64 | 21 | 2.63% |
| 65 to 69 | 21 | 2.63% |
| 70 to 74 | 10 | 1.25% |
| 75 to 79 | 18 | 2.26% |
| 80 and over | 10 | 1.25% |
| Total | 797 | 100.00% |
| ||
Historical population
The population of Pandayan fell from 610 in 1990 to 577 in 2020, a decrease of 33 people over the course of 30 years. The latest census figures in 2020 denote a negative annualized growth rate of 6.57%, or a decrease of 220 people, from the previous population of 797 in 2015.
Trends in population growth
| Census date | Population | Annualized Growth Rate |
|---|---|---|
| 610 | – | |
| 608 | -0.06% | |
| 666 | 1.97% | |
| 674 | 0.16% | |
| 815 | 7.16% | |
| 797 | -0.42% | |
| 577 | -6.57% |
Location
Pandayan is situated at approximately 17.7451, 120.4563, in the island of Luzon. Elevation at these coordinates is estimated at 18.5 meters or 60.7 feet above mean sea level.
Adjacent barangays
Pandayan shares a common border with the following barangay(s):
Notes
- Data on population, and households, are from the Philippine Statistics Authority.
- Postal code information is from the Philippine Postal Corporation.