Old San Mariano, Municipality of San Mariano, Province of Isabela

Summary data
Typebarangay
Island groupLuzon
RegionCagayan Valley (Region II)
ProvinceIsabela
MunicipalitySan Mariano
Postal code3332
Population (2020)2,274
Philippine major island(s)Luzon
Coordinates16.9935, 122.0003 (16° 60' North, 122° 0' East)
Estimated elevation above sea level75.0 meters (246.1 feet)

Old San Mariano is a barangay in the municipality of San Mariano, in the province of Isabela. Its population as determined by the 2020 Census was 2,274. This represented 3.78% of the total population of San Mariano.

Demographics

Households

The household population of Old San Mariano in the 2015 Census was 2,164 broken down into 531 households or an average of 4.08 members per household.

details
Number of households in Old San Mariano (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
1,6053155.10
1,6183205.06
1,7423534.93
1,9004234.49
1,9354594.22
2,1645314.08

Population by age group

According to the 2015 Census, the age group with the highest population in Old San Mariano is 15 to 19, with 230 individuals. Conversely, the age group with the lowest population is 75 to 79, with 14 individuals.

details
Population of Old San Mariano by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1442.03%
1 to 42099.66%
5 to 922310.30%
10 to 141788.23%
15 to 1923010.63%
20 to 2421710.03%
25 to 291717.90%
30 to 341707.86%
35 to 391446.65%
40 to 441396.42%
45 to 491024.71%
50 to 541054.85%
55 to 59884.07%
60 to 64602.77%
65 to 69251.16%
70 to 74281.29%
75 to 79140.65%
80 and over170.79%
Total2,164100.00%
  • Youth Dependency Ratio: 45.86
  • Old Age Dependency Ratio: 5.89
  • Total Dependency Ratio: 51.75
  • Median Age: 24.56

Historical population

The population of Old San Mariano grew from 1,605 in 1990 to 2,274 in 2020, an increase of 669 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 1.05%, or an increase of 110 people, from the previous population of 2,164 in 2015.

Population of Old San Mariano (1990‑2020)
Census datePopulationGrowth rate
1,605
1,6180.15%
1,7421.60%
1,9001.20%
1,9350.67%
2,1642.15%
2,2741.05%

Location

Old San Mariano is situated at approximately 16.9935, 122.0003, in the island of Luzon. Elevation at these coordinates is estimated at 75.0 meters or 246.1 feet above mean sea level.


Adjacent barangays

Old San Mariano 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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