Siay, Municipality of San Miguel, Province of Catanduanes

Summary data
Typebarangay
Island groupLuzon
RegionBicol Region (Region V)
ProvinceCatanduanes
MunicipalitySan Miguel
Postal code4802
Population (2020)469
Philippine major island(s)Catanduanes
Coordinates13.6839, 124.3017 (13° 41' North, 124° 18' East)
Estimated elevation above sea level31.4 meters (103.0 feet)

Siay is a barangay in the municipality of San Miguel, in the province of Catanduanes. Its population as determined by the 2020 Census was 469. This represented 2.99% of the total population of San Miguel.

Demographics

Households

The household population of Siay in the 2015 Census was 477 broken down into 106 households or an average of 4.50 members per household.

details
Number of households in Siay (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
398685.85
424815.23
387834.66
406904.51
465925.05
4771064.50

Population by age group

According to the 2015 Census, the age group with the highest population in Siay is 5 to 9, with 67 individuals. Conversely, the age group with the lowest population is 75 to 79, with 3 individuals.

details
Population of Siay by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1183.61%
1 to 4408.03%
5 to 96713.45%
10 to 145511.04%
15 to 19499.84%
20 to 24357.03%
25 to 29459.04%
30 to 34357.03%
35 to 39244.82%
40 to 44255.02%
45 to 49214.22%
50 to 54234.62%
55 to 59163.21%
60 to 64163.21%
65 to 69132.61%
70 to 7471.41%
75 to 7930.60%
80 and over61.20%
Total498100.00%
  • Youth Dependency Ratio: 62.28
  • Old Age Dependency Ratio: 10.03
  • Total Dependency Ratio: 72.31
  • Median Age: 22.86

Historical population

The population of Siay grew from 398 in 1990 to 469 in 2020, an increase of 71 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 1.25%, or a decrease of 29 people, from the previous population of 498 in 2015.

Population of Siay (1990‑2020)
Census datePopulationGrowth rate
398
4241.19%
387-1.94%
4060.66%
4655.06%
4981.31%
469-1.25%

Location

Siay is situated at approximately 13.6839, 124.3017, in the island of Catanduanes. Elevation at these coordinates is estimated at 31.4 meters or 103.0 feet above mean sea level.


Adjacent barangays

Siay 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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