Buan, Municipality of Siasi, Province of Sulu

Summary data
Typebarangay
Island groupMindanao
RegionBangsamoro Autonomous Region in Muslim Mindanao (BARMM)
ProvinceSulu
MunicipalitySiasi
Postal code7412
Population (2020)2,776
Philippine major island(s)Siasi
Coordinates5.5505, 120.8725 (5° 33' North, 120° 52' East)
Estimated elevation above sea level76.3 meters (250.3 feet)

Buan is a barangay in the municipality of Siasi, in the province of Sulu. Its population as determined by the 2020 Census was 2,776. This represented 3.40% of the total population of Siasi.

Demographics

Households

The household population of Buan in the 2015 Census was 2,551 broken down into 480 households or an average of 5.31 members per household.

details
Number of households in Buan (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
1,9442507.78
2,2723007.57
2,2813237.06
2,3584355.42
2,5494805.31
2,5514805.31

Population by age group

According to the 2015 Census, the age group with the highest population in Buan is 5 to 9, with 436 individuals. Conversely, the age group with the lowest population is 80 and over, with 5 individuals.

details
Population of Buan by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1431.69%
1 to 430311.88%
5 to 943617.09%
10 to 1428111.02%
15 to 1931612.39%
20 to 241706.66%
25 to 292268.86%
30 to 341345.25%
35 to 391877.33%
40 to 441455.68%
45 to 491244.86%
50 to 54652.55%
55 to 59240.94%
60 to 64281.10%
65 to 69351.37%
70 to 74220.86%
75 to 7970.27%
80 and over50.20%
Total2,551100.00%
  • Youth Dependency Ratio: 74.91
  • Old Age Dependency Ratio: 4.86
  • Total Dependency Ratio: 79.77
  • Median Age: 18.36

Historical population

The population of Buan grew from 1,944 in 1990 to 2,776 in 2020, an increase of 832 people over the course of 30 years. The latest census figures in 2020 denote a positive growth rate of 1.80%, or an increase of 225 people, from the previous population of 2,551 in 2015.

Population of Buan (1990‑2020)
Census datePopulationGrowth rate
1,944
2,2722.96%
2,2810.08%
2,3580.46%
2,5492.88%
2,5510.01%
2,7761.80%

Location

Buan is situated at approximately 5.5505, 120.8725, in the island of Siasi. Elevation at these coordinates is estimated at 76.3 meters or 250.3 feet above mean sea level.


Adjacent barangays

Buan 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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