Siasi, Province of Sulu

Summary data
Typemunicipality
Island groupMindanao
RegionBangsamoro Autonomous Region in Muslim Mindanao (BARMM)
ProvinceSulu
Barangay count50
Postal code7412
Coastal/Landlockedcoastal
Marine waterbodiesCelebes Sea
Philippine major island(s)Siasi
Area (2013)307.59 km2 (118.76 sq mi)
Population (2020)81,689
Density (2020)266 / km2 (688 / sq mi)
Coordinates5° 33' North, 120° 49' East (5.5433, 120.8146)
Estimated elevation above sea level1.1 meters (3.5 feet)

Siasi is a coastal municipality in the island province of Sulu.

The municipality has a land area of 307.59 square kilometers or 118.76 square miles which constitutes 6.76% of Sulu's total area. Its population as determined by the 2020 Census was 81,689. This represented 8.17% of the total population of Sulu province, or 1.85% of the overall population of the Bangsamoro Autonomous Region in Muslim Mindanao. Based on these figures, the population density is computed at 266 inhabitants per square kilometer or 688 inhabitants per square mile.

Barangays

Siasi has 50 barangays as shown in the following table.

Demographic profile of barangays
Local government units of Siasi
BarangayPopulation percentage (2020)Population (2020)Population (2015)Change (2015‑2020)Annual Population Growth Rate (2015‑2020)
Bakud1.16%9478758.23%1.68%
Buan3.40%2,7762,5518.82%1.80%
Bulansing Tara0.89%72664013.44%2.69%
Bulihkullul1.07%87077711.97%2.41%
Campo Islam3.50%2,8562,11335.16%6.55%
Duggo2.60%2,1262,0851.97%0.41%
Duhol Tara1.36%1,1091,00110.79%2.18%
East Kungtad1.56%1,2781,04921.83%4.24%
East Sisangat1.60%1,3061,13315.27%3.04%
Ipil0.93%7627225.54%1.14%
Jambangan1.09%89479812.03%2.42%
Kabubu1.31%1,07093114.93%2.97%
Kong-Kong Laminusa2.06%1,6861,20240.27%7.38%
Kud-kud1.53%1,2461,08714.63%2.92%
Kungtad West1.82%1,4881,04442.53%7.74%
Latung3.62%2,9552,7328.16%1.67%
Luuk Laminusa1.77%1,44283173.53%12.30%
Luuk Tara0.94%7667068.50%1.73%
Manta1.66%1,3591,2597.94%1.62%
Minapan3.23%2,6412,4248.95%1.82%
Nipa-nipa1.01%8267579.11%1.85%
North Laud3.91%3,1982,84612.37%2.48%
North Manta0.92%7496839.66%1.96%
North Musu Laud1.17%9538749.04%1.84%
North Silumpak0.76%62040553.09%9.38%
Pislong1.21%98788211.90%2.40%
Poblacion7.25%5,9224,52530.87%5.83%
Punungan1.14%93462948.49%8.68%
Puukan Laminusa2.85%2,328669247.98%30.01%
Ratag2.59%2,1161,9657.68%1.57%
Sablay1.26%1,03191113.17%2.64%
Sarukot1.41%1,1511,01713.18%2.64%
Siburi1.20%97877925.55%4.91%
Singko1.14%9358648.22%1.68%
Siolakan2.49%2,0302,0250.25%0.05%
Siowing1.62%1,3261,2089.77%1.98%
Sipanding1.98%1,6171,4908.52%1.74%
Sisangat1.27%1,03585720.77%4.05%
Siundoh1.06%86673717.50%3.45%
South Musu Laud0.90%73859723.62%4.56%
South Silumpak1.91%1,5601,14536.24%6.73%
Southwestern Bulikullul0.92%75261821.68%4.22%
Subah Buaya4.76%3,8923,22020.87%4.07%
Tampakan Laminusa3.50%2,8621,58181.02%13.31%
Tengah Laminusa1.95%1,5901,39813.73%2.75%
Tong Laminusa3.58%2,9222,52015.95%3.16%
Tonglabah1.46%1,19396224.01%4.63%
Tong-tong2.74%2,2362,0867.19%1.47%
Tubig Kutah1.11%9068309.16%1.86%
Tulling3.84%3,1332,66517.56%3.46%
Siasi Total81,68967,70520.65%4.03%

Economy

The annual regular revenue of Siasi for the fiscal year of 2016 was ₱122,826,922.49.

details
Annual regular income of Siasi (2009‑2016)
Fiscal YearAnnual Regular IncomeChange
200968,493,350.85–
201073,677,186.197.57%
201180,342,956.839.05%
201279,793,830.70-0.68%
201387,732,064.709.95%
201498,787,551.8012.60%
2015112,182,657.2113.56%
2016122,826,922.499.49%

End notes:

  • Annual Regular Income = Locally Sourced Revenue + Internal Revenue Allotment (IRA) Current Year + Other Shares from National Tax Collection
  • Locally Sourced Revenue = Real Property Tax (General Fund) + Tax on Business + Other Taxes + Regulatory Fees + Service/User Charges + Receipts from Economic Enterprises

Demographics

Households

The household population of Siasi in the 2015 Census was 67,666 broken down into 12,287 households or an average of 5.51 members per household.

details
Number of households in Siasi (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
46,4427,7675.98
50,6559,2375.48
59,0228,0947.29
63,51811,5575.50
64,22911,8305.43
67,66612,2875.51

Population by age group

According to the 2015 Census, the age group with the highest population in Siasi is 5 to 9, with 9,978 individuals. Conversely, the age group with the lowest population is 80 and over, with 107 individuals.

details
Population of Siasi by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 11,1661.72%
1 to 47,55711.16%
5 to 99,97814.74%
10 to 149,30813.75%
15 to 198,09611.96%
20 to 245,5938.26%
25 to 294,7527.02%
30 to 344,5086.66%
35 to 394,6496.87%
40 to 443,9005.76%
45 to 493,1454.65%
50 to 541,9312.85%
55 to 591,2071.78%
60 to 647971.18%
65 to 694720.70%
70 to 743270.48%
75 to 792120.31%
80 and over1070.16%
Total67,705100.00%
  • Youth Dependency Ratio: 72.6
  • Old Age Dependency Ratio: 2.9
  • Total Dependency Ratio: 75.5
  • Median Age: 18.61

Historical population

The population of Siasi grew from 17,102 in 1903 to 81,689 in 2020, an increase of 64,587 people over the course of 117 years. The latest census figures in 2020 denote a positive growth rate of 4.03%, or an increase of 13,984 people, from the previous population of 67,705 in 2015.

details
Population of Siasi (1903‑2020)
Census datePopulationGrowth rate
17,102–
4,809-7.70%
29,2599.45%
29,8360.20%
39,2792.45%
51,4252.67%
28,077-11.44%
50,33612.38%
46,468-0.80%
50,6551.63%
59,0693.35%
63,5181.01%
64,2290.41%
67,7051.01%
81,6894.03%

The total number of registered voters or electorate in Siasi for the year 2019 was 28,850, broken down into 13,057 males and 15,793 females.

Location

The municipal center of Siasi is situated at approximately 5° 33' North, 120° 49' East, in the island of Siasi. Elevation at these coordinates is estimated at 1.1 meters or 3.5 feet above mean sea level.

Distances

Based on the great-circle distance (the shortest distance between two points over the surface of the Earth), the cities closest to Siasi are Isabela City, Basilan, Lamitan, Basilan, Zamboanga City, Pagadian, Zamboanga del Sur, Cotabato City, and Tangub, Misamis Occidental. The nearest municipalities are Pandami, Sulu, Lugus, Sulu, Tapul, Sulu, Parang, Sulu, Maimbung, Sulu, and Pata, Sulu. Its distance from the national capital is 1,000.77 kilometers (621.85 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

  • Pandami, Sulu, 1.46 kilometers (0.91 miles) to the West (S80°W)
  • Lugus, Sulu, 17.53 kilometers (10.90 miles) to the North (N2°E)
  • Tapul, Sulu, 19.18 kilometers (11.92 miles) to the North‑Northeast (N23°E)
  • Parang, Sulu, 41.96 kilometers (26.07 miles) to the North‑Northeast (N14°E)
  • Maimbung, Sulu, 48.89 kilometers (30.38 miles) to the North‑Northeast (N28°E)
  • Pata, Sulu, 49.48 kilometers (30.74 miles) to the Northeast (N47°E)

Nearest cities

Distance from Manila: 1,000.77 kilometers (621.85 miles) to the North (N1°E)

Notes

  1. Unless otherwise specified, population count (excluding percentages), household data, and land area figures are derived from the Philippine Statistics Authority.
  2. Data on registered voters is from the Commission on Elections.
  3. Data on annual regular income is from the Bureau of Local Government Finance, Department of Finance
  4. Postal code information is from the Philippine Postal Corporation.
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