Siayan, Province of Zamboanga del Norte
| Type | municipality |
|---|---|
| Island group | Mindanao |
| Region | Zamboanga Peninsula (Region IX) |
| Province | Zamboanga del Norte |
| Barangay count | 22 |
| Postal code | 7113 |
| Coastal/Landlocked | landlocked |
| Marine waterbodies | none (landlocked) |
| Philippine major island(s) | Mindanao |
| Area (2013) | 494.75 km2 (191.02 sq mi) |
| Population (2020) | 36,236 |
| Density (2020) | 73 / km2 (190 / sq mi) |
| Coordinates | 8° 15' North, 123° 7' East (8.2513, 123.1134) |
| Estimated elevation above sea level | 79.9 meters (262.1 feet) |
Siayan is a landlocked municipality in the coastal province of Zamboanga del Norte.
The municipality has a land area of 494.75 square kilometers or 191.02 square miles which constitutes 6.78% of Zamboanga del Norte's total area. Its population as determined by the 2020 Census was 36,236. This represented 3.46% of the total population of Zamboanga del Norte province, or 0.93% of the overall population of the Zamboanga Peninsula region. Based on these figures, the population density is computed at 73 inhabitants per square kilometer or 190 inhabitants per square mile.
Barangays
Siayan has 22 barangays as shown in the following table.
Demographic profile of barangays
| Barangay | Population percentage (2020) | Population (2020) | Population (2015) | Change (2015‑2020) | Annual Population Growth Rate (2015‑2020) |
|---|---|---|---|---|---|
| Balok | 4.39% | 1,592 | 1,376 | 15.70% | 3.12% |
| Balunokan | 1.87% | 677 | 764 | -11.39% | -2.51% |
| Datagan | 3.63% | 1,316 | 1,125 | 16.98% | 3.36% |
| Denoyan | 3.98% | 1,442 | 1,417 | 1.76% | 0.37% |
| Diongan | 7.24% | 2,624 | 2,420 | 8.43% | 1.72% |
| Domogok | 3.99% | 1,445 | 1,421 | 1.69% | 0.35% |
| Dumpilas | 2.77% | 1,005 | 956 | 5.13% | 1.06% |
| Gonayen | 2.71% | 981 | 872 | 12.50% | 2.51% |
| Guibo | 10.05% | 3,641 | 3,580 | 1.70% | 0.36% |
| Gunyan | 5.63% | 2,039 | 1,911 | 6.70% | 1.37% |
| Litolet | 3.06% | 1,109 | 1,091 | 1.65% | 0.35% |
| Macasing | 4.59% | 1,662 | 1,538 | 8.06% | 1.65% |
| Mangilay | 6.17% | 2,234 | 2,192 | 1.92% | 0.40% |
| Moyo | 4.83% | 1,749 | 1,849 | -5.41% | -1.16% |
| Muñoz | 3.07% | 1,114 | 978 | 13.91% | 2.78% |
| Pange | 3.90% | 1,412 | 1,386 | 1.88% | 0.39% |
| Paranglumba | 6.47% | 2,346 | 2,027 | 15.74% | 3.12% |
| Polayo | 2.77% | 1,004 | 1,106 | -9.22% | -2.02% |
| Sayaw | 1.92% | 694 | 664 | 4.52% | 0.93% |
| Seriac | 2.53% | 916 | 919 | -0.33% | -0.07% |
| Siayan Proper | 10.34% | 3,748 | 3,931 | -4.66% | -1.00% |
| Suguilon | 4.10% | 1,486 | 1,443 | 2.98% | 0.62% |
| Siayan Total | 36,236 | 34,966 | 3.63% | 0.75% | |
Economy
The annual regular revenue of Siayan for the fiscal year of 2016 was ₱134,245,137.70.
details
| Fiscal Year | Annual Regular Income | Change |
|---|---|---|
| 2009 | 77,507,414.85 | – |
| 2010 | 82,070,386.01 | 5.89% |
| 2011 | 90,600,408.96 | 10.39% |
| 2012 | 87,048,456.49 | -3.92% |
| 2013 | 94,147,375.44 | 8.16% |
| 2014 | 107,198,645.70 | 13.86% |
| 2015 | 122,625,577.76 | 14.39% |
| 2016 | 134,245,137.70 | 9.48% |
End notes:
| ||
Demographics
Households
The household population of Siayan in the 2015 Census was 34,933 broken down into 7,319 households or an average of 4.77 members per household.
details
| Census date | Household population | Number of households | Average household size |
|---|---|---|---|
| 24,293 | 4,553 | 5.34 | |
| 27,927 | 5,097 | 5.48 | |
| 32,997 | 6,086 | 5.42 | |
| 34,566 | 6,661 | 5.19 | |
| 34,983 | 6,994 | 5.00 | |
| 34,933 | 7,319 | 4.77 |
Population by age group
According to the 2015 Census, the age group with the highest population in Siayan is 5 to 9, with 4,952 individuals. Conversely, the age group with the lowest population is 80 and over, with 206 individuals.
details
| Age group | Population (2015) | Age group percentage |
|---|---|---|
| Under 1 | 858 | 2.45% |
| 1 to 4 | 4,001 | 11.44% |
| 5 to 9 | 4,952 | 14.16% |
| 10 to 14 | 4,598 | 13.15% |
| 15 to 19 | 3,804 | 10.88% |
| 20 to 24 | 2,991 | 8.55% |
| 25 to 29 | 2,425 | 6.94% |
| 30 to 34 | 2,063 | 5.90% |
| 35 to 39 | 1,869 | 5.35% |
| 40 to 44 | 1,802 | 5.15% |
| 45 to 49 | 1,454 | 4.16% |
| 50 to 54 | 1,272 | 3.64% |
| 55 to 59 | 1,008 | 2.88% |
| 60 to 64 | 714 | 2.04% |
| 65 to 69 | 418 | 1.20% |
| 70 to 74 | 312 | 0.89% |
| 75 to 79 | 219 | 0.63% |
| 80 and over | 206 | 0.59% |
| Total | 34,966 | 100.00% |
| ||
Historical population
The population of Siayan grew from 9,193 in 1970 to 36,236 in 2020, an increase of 27,043 people over the course of 50 years. The latest census figures in 2020 denote a positive growth rate of 0.75%, or an increase of 1,270 people, from the previous population of 34,966 in 2015.
details
| Census date | Population | Growth rate |
|---|---|---|
| – | – | |
| – | – | |
| – | – | |
| – | – | |
| – | – | |
| 9,193 | – | |
| 13,913 | 8.67% | |
| 18,420 | 5.77% | |
| 24,314 | 2.82% | |
| 27,950 | 2.65% | |
| 33,074 | 3.68% | |
| 34,588 | 0.62% | |
| 34,989 | 0.42% | |
| 34,966 | -0.01% | |
| 36,236 | 0.75% |
The total number of registered voters or electorate in Siayan for the year 2019 was 21,642, broken down into 11,263 males and 10,379 females.
Location
The municipal center of Siayan is situated at approximately 8° 15' North, 123° 7' East, in the island of Mindanao. Elevation at these coordinates is estimated at 79.9 meters or 262.1 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 Siayan are Dipolog, Zamboanga del Norte, Dapitan, Zamboanga del Norte, Pagadian, Zamboanga del Sur, Tangub, Misamis Occidental, Oroquieta, Misamis Occidental, and Ozamiz, Misamis Occidental. The nearest municipalities are Sindangan, Zamboanga del Norte, Jose Dalman, Zamboanga del Norte, Leon B. Postigo, Zamboanga del Norte, Dumingag, Zamboanga del Sur, Manukan, Zamboanga del Norte, and President Manuel A. Roxas, Zamboanga del Norte. Its distance from the national capital is 738.80 kilometers (459.07 miles). The following list delineates such distance measurements.
great-circle distance
Nearest towns
- Sindangan, Zamboanga del Norte, 12.52 kilometers (7.78 miles) to the West (S81°W)
- Jose Dalman, Zamboanga del Norte, 23.34 kilometers (14.50 miles) to the North‑Northwest (N25°W)
- Leon B. Postigo, Zamboanga del Norte, 23.45 kilometers (14.57 miles) to the West‑Southwest (S62°W)
- Dumingag, Zamboanga del Sur, 27.82 kilometers (17.29 miles) to the East‑Southeast (S68°E)
- Manukan, Zamboanga del Norte, 29.34 kilometers (18.23 miles) to the North (N4°W)
- President Manuel A. Roxas, Zamboanga del Norte, 32.32 kilometers (20.09 miles) to the North‑Northeast (N24°E)
Nearest cities
- Dipolog, Zamboanga del Norte, 44.83 kilometers (27.86 miles) to the Northeast (N34°E)
- Dapitan, Zamboanga del Norte, 56.36 kilometers (35.02 miles) to the Northeast (N37°E)
- Pagadian, Zamboanga del Sur, 59.20 kilometers (36.79 miles) to the Southeast (S37°E)
- Tangub, Misamis Occidental, 73.51 kilometers (45.68 miles) to the East‑Southeast (S73°E)
- Oroquieta, Misamis Occidental, 80.72 kilometers (50.16 miles) to the East‑Northeast (N71°E)
- Ozamiz, Misamis Occidental, 81.64 kilometers (50.73 miles) to the East (S82°E)
Distance from Manila: 738.80 kilometers (459.07 miles) to the North‑Northwest (N18°W)
Notes
- Unless otherwise specified, population count (excluding percentages), household data, and land area figures are derived from the Philippine Statistics Authority.
- Data on registered voters is from the Commission on Elections.
- Data on annual regular income is from the Bureau of Local Government Finance, Department of Finance
- Postal code information is from the Philippine Postal Corporation.