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Municipality

Sergio Osmeña Sr.

Sergio Osmeña Sr. is a municipality in Zamboanga del Norte, Zamboanga Peninsula, Philippines. Its population was 31,187 in the 2024 census, and it has 39 barangays.

  • Population: 2024 Census
  • Places: PSGC 2Q 2026
  • Checked by Scene: October 8, 2026
  • Page updated: October 9, 2026
Colour byColours the map of Sergio Osmeña Sr. by the figure chosen; the key beside it says what each colour means.
Dipolog CityDon VictorianoDumingagJosefinaKatipunanMahayagMolaveMutiaPiñanPolancoSiayanAntonino: 298 people, 98 per km², 5.97% a yearBagong Baguio: 922 people, 162 per km², 1.66% a yearBagumbayan: 802 people, 39 per km², −5.54% a yearBiayon: 1,969 people, 149 per km², −0.16% a yearBuenavista: 783 people, 103 per km², 0.06% a yearDampalan: 1,511 people, 279 per km², 0.56% a yearDanao: 487 people, 64 per km², −0.05% a yearDon Eleno: 285 people, 216 per km², 2.13% a yearKauswagan: 665 people, 90 per km², −0.53% a yearLabiray: 667 people, 85 per km², 1.57% a yearLiwanag: 441 people, 126 per km², 2.06% a yearMabuhay: 328 people, 40 per km², 0.15% a yearMacalibre: 350 people, 18 per km², −4.60% a yearMahayahay: 467 people, 32 per km², −1.62% a yearMarapong: 1,280 people, 236 per km², −0.06% a yearNazareth: 1,100 people, 24 per km², −2.30% a yearNebo: 707 people, 112 per km², −0.03% a yearNew Rizal: 279 people, 8 per km², −8.11% a yearNew Tangub: 618 people, 205 per km², 0.67% a yearNuevavista: 229 people, 35 per km², −11.99% a yearPedagan: 524 people, 123 per km², −2.00% a yearPenacio: 285 people, 40 per km², 0.69% a yearPoblacion Alto: 2,329 people, 582 per km², 1.56% a yearPoblacion Bajo: 1,648 people, 597 per km², −0.99% a yearPrincesa Lamaya: 809 people, 75 per km², 0.30% a yearPrincesa Freshia: 414 people, 64 per km², −1.40% a yearSan Antonio: 522 people, 54 per km², −3.52% a yearSan Francisco: 658 people, 76 per km², 2.24% a yearSan Isidro: 1,200 people, 90 per km², −2.97% a yearSan Jose: 2,338 people, 131 per km², −1.80% a yearSan Juan: 1,031 people, 276 per km², 2.29% a yearSinaad: 600 people, 52 per km², 3.64% a yearSinai: 919 people, 225 per km², −2.08% a yearSitubo: 636 people, 179 per km², 1.45% a yearTinago: 262 people, 19 per km², −0.63% a yearTinindugan: 256 people, 50 per km², −1.70% a yearTuburan: 555 people, 95 per km², −1.93% a yearVenus: 1,597 people, 279 per km², 0.09% a yearWilben: 416 people, 57 per km², −0.23% a year

People · 2024 Census

  • Under 690
  • 690 to 1,100
  • 1,100 to 1,800
  • 1,800 to 3,100
  • 3,100 and over

The same steps colour every map of barangays in the Atlas, so a colour means the same range everywhere.

Density · people per km², 2024

  • Under 160
  • 160 to 340
  • 340 to 700
  • 700 to 2,600
  • 2,600 and over

The same steps colour every map of barangays in the Atlas, so a colour means the same range everywhere.

Growth a year · 2020–2024

  • Fell by more than 1% a year
  • Fell, by up to 1% a year
  • Grew, by under 1% a year
  • Grew by 1 to 2% a year
  • Grew by 2% a year or more

Each place's yearly change between the 2020 and 2024 censuses, on the same steps as every map in the Atlas.

Borders from UN OCHA (PSA and NAMRIA), a guide and not the legal boundary[3]Open in OpenStreetMap

  • PeopleSources

    31,187

    people counted in the 2024 censusCensusA count of every person in the country, all on one day. The 2024 census counted people as they were on 1 July 2024.More in the glossary

    Up 5.9% from 2010 to 2024

  • Rank by peopleSources

    16th

    of the 27 cities and municipalities of Zamboanga del Norte by population, 2024Rank and shareWorked out by Scene from the PSA's counts: where a place stands among the places listed with it, and how many of every 100 of its parent's people live in it.More in the glossary

    About 3 of every 100 people in Zamboanga del Norte lived in Sergio Osmeña Sr. in 2024 (2.92%)

  • Inside itSources

    39

    barangays

  • LandSources

    557.07 km²

    of land, 2019 masterlistLand areaThe land inside the place's official boundary. A square kilometre is a square 1 km on each side, about the size of 140 football fields.Explained by Scene: Sergio Osmeña Sr.'s land would fill a square about 23.6 km on each side. That is only a way to picture its size: its real shape is on the map.More in the glossary

    Average density, 2024: 56 people per km²Population densityHow crowded a place is on average: its people divided by its land area. 1,000 people per square kilometre is 10 people per hectare, a square of 100 by 100 metres.Explained by Scene: About 1 person per 2 hectares if everyone were spread evenly across the land. In fact people live closer together in towns and farther apart in the countryside.More in the glossary

  • HomesSources

    8,302

    households in 2024HouseholdA person living alone, or people who sleep in the same home and share their meals. A family may be one household or several.More in the glossary

    3.8 people in each, on average, in 2024

  • Town or countrySources

    0%

    Fewer than 1 of every 1,000 people lived in urban barangays in 2024Urban barangayThe PSA counts a barangay as urban when it has 5,000 people or more, or a big employer, or several businesses and public services close by. Every barangay in Metro Manila is urban.More in the glossary

PSGC codePSGC codeThe code the Philippine Statistics Authority gives every place, so each one is known exactly, even when two share a name.More in the glossary
0907214000[4]Formerly 097214000
ZIP code
7108[12, 13]

People

Sergio Osmeña Sr. had 31,187 people in the 2024 census, up 5.9% from 2010.
People at each census since 1970

Counts from 2000 on are on today’s borders; earlier counts are as the place was then, so the line may step where a border moved.

Sergio Osmeña Sr. had the 16th most people of the 27 cities and municipalities of Zamboanga del Norte in 2024[1]
  1. 13Gutalac37,512
  2. 14Manukan35,669
  3. 15Salug33,060
  4. 16Sergio Osmeña Sr.31,187
  5. 17Leon T. Postigo29,535
  6. 18Jose Dalman27,951
  7. 19Baliguian25,585
All 27 cities and municipalities of Zamboanga del Norte
In 2024, the 10 barangays with the most people held about 51 of every 100 of its people[2]
  1. San Jose2,3387 in 100
  2. Poblacion Alto2,3297 in 100
  3. Biayon1,9696 in 100
  4. Poblacion Bajo1,6485 in 100
  5. Venus1,5975 in 100
  6. Dampalan1,5115 in 100
  7. Marapong1,2804 in 100
  8. San Isidro1,2004 in 100
  9. Nazareth1,1004 in 100
  10. San Juan1,0313 in 100
See all 39 barangays of Sergio Osmeña Sr.
Age structure · 2020 Census[32]People living in households, by age and sex
  • About 38 of every 100 are children under 15 (37.5%)
  • About 57 of every 100 are of working age, 15 to 64 (57.4%)
  • About 5 of every 100 are 65 or older (5.1%)
MenWomen

The figures by age

People by age group, men and women
AgePeopleMenWomen
0 - 44,1502,0942,056
5 - 94,0102,1171,893
10 - 143,7941,9281,866
15 - 193,4541,8401,614
20 - 242,7661,4231,343
25 - 292,3631,2811,082
30 - 342,0071,101906
35 - 391,641902739
40 - 441,439794645
45 - 491,438735703
50 - 541,245641604
55 - 591,111577534
60 - 64862439423
65 - 69666332334
70 - 74441222219
75 - 79283133150
80 years and over24494150

Every figure, census by census

People, 2024 CensusCensusA count of every person in the country, all on one day. The 2024 census counted people as they were on 1 July 2024.More in the glossary
31,187[1, 2]
Households, 2024HouseholdA person living alone, or people who sleep in the same home and share their meals. A family may be one household or several.More in the glossary
8,302[1, 2]
People in each household, 2024
3.8 on average[1, 2]
Share of Zamboanga del Norte, 2024Rank and shareWorked out by Scene from the PSA's counts: where a place stands among the places listed with it, and how many of every 100 of its parent's people live in it.More in the glossary
2.92%[1]
In urban barangays, 2024Urban barangayThe PSA counts a barangay as urban when it has 5,000 people or more, or a big employer, or several businesses and public services close by. Every barangay in Metro Manila is urban.More in the glossary
0% (0 people)[5]
Men and women, 2020
16,653 men, 15,261 women[32]People living in households
Population at each census, with its source
CensusPopulationGrowth since the census beforeHouseholdsPeople per household
2024as of July 1, 202431,187[1, 2]−0.57% a year8,3023.8
2020as of May 1, 202031,942[1]1.17% a year——
2015as of August 1, 201530,220[1]0.49% a year——
2010as of May 1, 201029,453[1]———
2007as of August 1, 2007; as it was then29,049[30]0.76% a year——
2000as of May 1, 2000; on today’s borders27,500[30, 31]1.20% a year——
1995as of September 1, 1995; as it was then26,014[30]2.79% a year——
1990as of May 1, 1990; as it was then22,454[30]0.05% a year——
1980as of May 1, 1980; as it was then22,337[30]1.81% a year——
1975as of May 1, 1975; as it was then20,418[30]3.38% a year——
1970as of May 6, 1970; as it was then17,300[30]———

Barangays

Sergio Osmeña Sr. is made up of 39 barangays.
Barangays of Sergio Osmeña Sr.. Each column heading sorts the table.
[2, 3, 5, 6, 7]Share (2024)Urban or rural
Antonino2980.96%5.97% a yearabout 3.05 km²Rural
Bagong Baguio9222.96%1.66% a yearabout 5.69 km²Rural
Bagumbayan8022.57%−5.54% a yearabout 20.55 km²Rural
Biayon1,9696.31%−0.16% a yearabout 13.24 km²Rural
Buenavista7832.51%0.06% a yearabout 7.59 km²Rural
Dampalan1,5114.84%0.56% a yearabout 5.42 km²Rural
Danao4871.56%−0.05% a yearabout 7.65 km²Rural
Don Eleno2850.91%2.13% a yearabout 1.32 km²Rural
Kauswagan6652.13%−0.53% a yearabout 7.40 km²Rural
Labiray6672.14%1.57% a yearabout 7.84 km²Rural
Liwanag4411.41%2.06% a yearabout 3.49 km²Rural
Mabuhay3281.05%0.15% a yearabout 8.17 km²Rural
Macalibre3501.12%−4.60% a yearabout 19.41 km²Rural
Mahayahay4671.5%−1.62% a yearabout 14.53 km²Rural
Marapong1,2804.1%−0.06% a yearabout 5.42 km²Rural
Nazareth1,1003.53%−2.30% a yearabout 46.23 km²Rural
Nebo7072.27%−0.03% a yearabout 6.31 km²Rural
New Rizal2790.89%−8.11% a yearabout 35.02 km²Rural
New Tangub6181.98%0.67% a yearabout 3.01 km²Rural
Nuevavista2290.73%−11.99% a yearabout 6.48 km²Rural
Pedagan5241.68%−2.00% a yearabout 4.27 km²Rural
Penacio2850.91%0.69% a yearabout 7.06 km²Rural
Poblacion Alto2,3297.47%1.56% a yearabout 4.00 km²Rural
Poblacion Bajo1,6485.28%−0.99% a yearabout 2.76 km²Rural
Princesa Freshia4141.33%−1.40% a yearabout 6.48 km²Rural
Princesa Lamaya8092.59%0.30% a yearabout 10.85 km²Rural
San Antonio5221.67%−3.52% a yearabout 9.69 km²Rural
San Francisco6582.11%2.24% a yearabout 8.69 km²Rural
San Isidro1,2003.85%−2.97% a yearabout 13.29 km²Rural
San Jose2,3387.5%−1.80% a yearabout 17.89 km²Rural
San Juan1,0313.31%2.29% a yearabout 3.74 km²Rural
Sinaad6001.92%3.64% a yearabout 11.47 km²Rural
Sinai9192.95%−2.08% a yearabout 4.09 km²Rural
Situbo6362.04%1.45% a yearabout 3.56 km²Rural
Tinago2620.84%−0.63% a yearabout 13.54 km²Rural
Tinindugan2560.82%−1.70% a yearabout 5.17 km²Rural
Tuburan5551.78%−1.93% a yearabout 5.87 km²Rural
Venus1,5975.12%0.09% a yearabout 5.73 km²Rural
Wilben4161.33%−0.23% a yearabout 7.31 km²Rural

Areas are approximate: each is measured inside the barangay's border on UN OCHA's map, which is a guide, not the legal boundary.

Land & Environment

Sergio Osmeña Sr. covers 557.07 km² of land, 56 people for every km² in 2024. Its land rises to 1,412 m above the sea and it lies inland.
Land areaLand areaThe land inside the place's official boundary. A square kilometre is a square 1 km on each side, about the size of 140 football fields.More in the glossary
557.07 km²[6]As listed in the 2019 Masterlist of Land Areas (LMB, DENR)
Average density, 2024Population densityHow crowded a place is on average: its people divided by its land area. 1,000 people per square kilometre is 10 people per hectare, a square of 100 by 100 metres.More in the glossary
56 people per km²[6]
Coordinates
8.29131° N, 123.38164° E[3]The point inside its border farthest from every edge, so it always falls within the place.
Height above the sea[26]
Lowest
84 m
Average
480 m
Highest
1,412 m

Heights from the Copernicus DEM, a 30 m model of the surface: it reads the tops of trees and roofs, not the bare ground, over the land inside the border, the sea left out. Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved.

Water, coast and peaks

No coastline: it lies inland.

Rivers[27]

  1. Layawan River16.8 of 56.8 km
  2. Dikayu River12.2 of 38.9 km
  3. Yabo River7.9 of 56.9 km
  4. G'round River6.0 km
  5. Layawan River5.2 km
  6. Punta River2.5 of 34.0 km
  7. Layawan River2.4 of 7.0 km
  8. Usoy Creek2.3 of 36.7 km

The longest inside it: 9 in all.

Named rivers, lakes and peaks as OpenStreetMap mapped them on 30 September 2026, and the coast within 150 m of the border. Map data © OpenStreetMap contributors, under the Open Database License.

Climate

Climate typeClimate typePAGASA sorts the country's climate into four types by when the rain falls. Type I has a dry season from November to April and a wet one for the rest of the year; Type II has no dry season, with the most rain from December to February; Type III has a short dry season; Type IV has rain spread through the year.More in the glossary

Type IV[28]

Rain spread fairly evenly through the year, with no dry season.

Read by Scene off PAGASA's climate map, so approximate: the type that covers most of the place's land.

At Dipolog, the nearest PAGASA station, 35 km away[29]Averages for 1991 to 2020: 2,484 mm of rain on 162 days a year; 27.4 °C on average

Rain each month Average temperature

The figures by month

Climate at Dipolog, 1991 to 2020, by month
MonthRainRainy daysAverageHighLow
January170 mm1526.7 °C30.3 °C23.0 °C
February136 mm1026.8 °C30.7 °C23.0 °C
March104 mm927.4 °C31.6 °C23.2 °C
April104 mm728.1 °C32.6 °C23.7 °C
May169 mm1128.1 °C32.6 °C23.6 °C
June252 mm1627.6 °C32.0 °C23.2 °C
July226 mm1527.0 °C31.8 °C22.1 °C
August195 mm1327.6 °C32.0 °C23.1 °C
September182 mm1427.5 °C32.0 °C23.0 °C
October301 mm1727.4 °C31.8 °C23.1 °C
November366 mm1827.2 °C31.3 °C23.1 °C
December280 mm1727.0 °C30.9 °C23.2 °C
The year2,484 mm16227.4 °C31.6 °C23.1 °C

A station's figures describe the place around it only roughly: inland and in the hills it may be cooler and wetter. The station stands 4 m above the sea.

Life & Economy

About 61 of every 100 people lived below the poverty line in 2021.
Poverty, 2021Poverty incidenceHow many of every 100 people live in families whose income is below the poverty line: what a person needs in a year for food and other basic needs, as the PSA sets it for each province. It is an estimate, from a survey or, for a town, a statistical model, so the PSA gives a range it is likely to fall in.More in the glossary
60.8% of people[16]Below the poverty line, by the PSA's estimate for every town.
Income classIncome classThe Department of Finance sorts provinces, cities and municipalities into classes by their average yearly income over recent years: 1st class has the most. It measures the local government's income, not how well off its people are.More in the glossary
1st class[4]
About 61 of every 100 people in Sergio Osmeña Sr. lived below the poverty line in 2021 (60.8%)[16]

The PSA's model for every town puts it between 56.4% and 65.3%, with 90% confidence.

Public places

  • 5government offices
  • 42schools
  • 2places of worship
  • 1market
  • 1station or terminal

Counted from OpenStreetMap[3, 8]. Schools, places of worship, barangay halls and places known only by a common name, such as a chapel, are listed on each barangay's page.

As OpenStreetMap maps them on September 30, 2026. Map data © OpenStreetMap contributors, under the Open Database License.

Government & Leaders

A mayor leads Sergio Osmeña Sr.. Its local laws, called ordinances, are passed by the Sangguniang Bayan (the municipal council), led by the vice mayor. The mayor, the vice mayor and the council's elected members serve three-year terms, and none may serve more than three in a row.[10, 11]

Legislative districtLegislative districtThe area that elects one member of the House of Representatives. A big province or city may have several.More in the glossary
1st district of Zamboanga del Norte[14, 15]

Leaders

The mayor and vice mayor elected at each election since 2001, as COMELEC's lists of the elected name them, and those in office now, as the DILG's directory lists them.

  1. 2025–2028In office as of February 2026

    Mayor
    Glen Navarro Yu[17]
    Vice mayor
    Ciddycriz Clamohoy Villamin[17]

  2. 2022–2025

    Mayor
    Augustines Jumawan Magsalay[18]
    Vice mayor
    Sunny Tan-Awon Tiso[18]

  3. 2019–2022

    Mayor
    Augustines Jumawan Magsalay[19]
    Vice mayor
    Ariel Clamohoy Bendijo[19]

  4. 2016–2019

    Mayor
    Augustines Jumawan Magsalay[20]
    Vice mayor
    Roger Tayrus Chua[20]

  5. 2013–2016

    Mayor
    Richard Duhaylungsod Magsalay[21]
    Vice mayor
    Roger Tayrus Chua[21]

  6. 2010–2013

    Mayor
    Augustines Jumawan Magsalay[22]
    Vice mayor
    Roel Perez Antiquina[22]

  7. 2007–2010

    Mayor
    Augustines Jumawan Magsalay[23]
    Vice mayor
    Roel Perez Antiquina[23]

  8. 2004–2007

    Mayor
    Augustines Magsalay[24]
    Vice mayor
    Roel Antiquina[24]

  9. 2001–2004

    Mayor
    Roel P. Antiquina[25]
    Vice mayor
    Jorge B. Empeynado[25]
Mayors and vice mayors of Sergio Osmeña Sr., by term
TermMayorVice mayor
2025–2028In office as of February 2026Glen Navarro Yu[17]Ciddycriz Clamohoy Villamin[17]
2022–2025Augustines Jumawan Magsalay[18]Sunny Tan-Awon Tiso[18]
2019–2022Augustines Jumawan Magsalay[19]Ariel Clamohoy Bendijo[19]
2016–2019Augustines Jumawan Magsalay[20]Roger Tayrus Chua[20]
2013–2016Richard Duhaylungsod Magsalay[21]Roger Tayrus Chua[21]
2010–2013Augustines Jumawan Magsalay[22]Roel Perez Antiquina[22]
2007–2010Augustines Jumawan Magsalay[23]Roel Perez Antiquina[23]
2004–2007Augustines Magsalay[24]Roel Antiquina[24]
2001–2004Roel P. Antiquina[25]Jorge B. Empeynado[25]

History & Identity

Created
Republic Act No. 3697, approved 22 June 1963, created the Municipality of Sergio Osmeña from five barrios of Piñan; the seat of government was Sibulan.[9]

Its story

Its first mayor, vice-mayor and councilors were to be appointed by the President until elections were held.[9]

Timeline

  1. 22 June 1963

    Republic Act No. 3697 created Sergio Osmeña out of Piñan.[9]

Nearby

Sergio Osmeña Sr. shares a border with 11 places.

How it compares

Sergio Osmeña Sr. beside Zamboanga del Norte, and where it stands among the cities and municipalities of Zamboanga del Norte.

Sergio Osmeña Sr. beside Zamboanga del Norte
FigureSergio Osmeña Sr.Zamboanga del NorteRank among the cities and municipalities of Zamboanga del Norte
People, 2024CensusA count of every person in the country, all on one day. The 2024 census counted people as they were on 1 July 2024.More in the glossary31,187[1, 2]1,067,06716th of 27
Growth a year, 2020–2024Growth a yearHow fast the number of people changed each year between two censuses. 1% a year means about 1 more person for every 100 people, each year.More in the glossary−0.57% a year[1, 2]slower0.45% a year21st of 27
People per km², 2024Population densityHow crowded a place is on average: its people divided by its land area. 1,000 people per square kilometre is 10 people per hectare, a square of 100 by 100 metres.More in the glossary56[6]less crowded15326th of 27
Land areaLand areaThe land inside the place's official boundary. A square kilometre is a square 1 km on each side, about the size of 140 football fields.More in the glossary557.07 km²[6]6,993.50 km²2nd of 27
People in each household, 2024HouseholdA person living alone, or people who sleep in the same home and share their meals. A family may be one household or several.More in the glossary3.8[1, 2]higher3.6not ranked
In urban barangays, 2024Urban barangayThe PSA counts a barangay as urban when it has 5,000 people or more, or a big employer, or several businesses and public services close by. Every barangay in Metro Manila is urban.More in the glossary0%[5]lower20.1%not ranked

How far, in a straight line[3]

Dipolog City, the capital of Zamboanga del Norte
32.2 km north
Manila
748.0 km north

In a straight line between the points inside each place farthest from its edges, not by road.

The nearest towns and cities[3]

  1. MolaveZamboanga del Sur13.4 km southeast
  2. KatipunanZamboanga del Norte14.8 km northwest
  3. MahayagZamboanga del Sur16.6 km south
  4. DumingagZamboanga del Sur17.4 km southwest
  5. MutiaZamboanga del Norte18.9 km northeast
  6. PiñanZamboanga del Norte19.0 km north

Sources

Page updated October 9, 2026. Sources checked by Scene October 8, 2026.
  1. 1.Philippine Statistics Authority. Population and Annual Population Growth Rate of the Philippines and its Regions, Provinces, and Highly Urbanized Cities Based on the 2010, 2015, 2020 and 2024 Population Census (OpenSTAT table 0211A6DAPG0). Published August 7, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  2. 2.Philippine Statistics Authority. Total Population, Household Population, and Number of Households by Province, City, Municipality, and Barangay as of 01 July 2024: Zamboanga Peninsula (OpenSTAT table 0091A6DTPH8). Published August 5, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  3. 3.UN OCHA, from the PSA and NAMRIA. Philippines: Subnational Administrative Boundaries (COD-AB), barangay layer. Published February 13, 2025. Read by Scene September 25, 2026. CC BY-IGO 3.0. Open the source
  4. 4.Philippine Statistics Authority. Philippine Standard Geographic Code (PSGC), 2nd Quarter 2026: Publication Datafile. Published June 30, 2026. Read by Scene September 24, 2026. CC BY (PSA Terms of Use). Open the source
  5. 5.Philippine Statistics Authority. Total Population and Urban Population by Urban Classification and Region, Province, Highly Urbanized City, City/Municipality and Barangay: Philippines, 2024 (OpenSTAT table 0231A6DPUP0). Published August 7, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  6. 6.Philippine Statistics Authority, from the Land Management Bureau (DENR). Population, Land Area, Population Density, and Percent Change in Population Density by Region, Province/Highly Urbanized City, and City/Municipality: 2015, 2020, and 2024 (OpenSTAT table 0221A6DLPD0). Published August 7, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  7. 7.Philippine Statistics Authority. Philippine Standard Geographic Code (PSGC), 4th Quarter 2022: Publication Datafile, with the 2015 and 2020 census counts (the PSA's file, as the Internet Archive keeps it). Published December 31, 2022. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  8. 8.OpenStreetMap contributors. Named public places in OpenStreetMap: schools, hospitals and health centres, places of worship, government offices, markets, stations, parks, beaches and monuments, from Geofabrik's extract of the Philippines. Published September 30, 2026. Read by Scene October 2, 2026. ODbL 1.0. Open the source
  9. 9.Lawphil Project (Arellano Law Foundation). Republic Act No. 3697. Published June 22, 1963. Read by Scene October 3, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  10. 10.Congress of the Philippines. Republic Act No. 7160: the Local Government Code of 1991. Published October 10, 1991. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  11. 11.1986 Constitutional Commission. The 1987 Constitution of the Republic of the Philippines. Published February 2, 1987. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  12. 12.Philippine Postal Corporation (PHLPost). ZIP Code Locator, as the Internet Archive captured it on 2022-05-21 (its SHA-1 matches the Archive's index). Published May 21, 2022. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1; a government-owned corporation's work is the Government's, Section 171.9). Open the source
  13. 13.Philippine Postal Corporation (PHLPost). Philippine ZIP Codes (the directory "ZipCode 2019.pdf", made 2019-12-02), as the Internet Archive keeps it (its SHA-1 matches the Archive's index). Published December 2, 2019. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1; a government-owned corporation's work is the Government's, Section 171.9). Open the source
  14. 14.1986 Constitutional Commission (text from the Chan Robles Virtual Law Library). Ordinance appended to the 1987 Constitution, apportioning the seats of the House of Representatives. Published February 2, 1987. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  15. 15.Commission on Elections (COMELEC). 2025 National and Local Elections: results, certificates of canvass of every province, city and municipality. Published May 2025. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  16. 16.Philippine Statistics Authority. Municipal and City Level Small Area Poverty Estimates; 2018 and 2021 (the PSA's workbook "2018 - 2021 SAE_with PSGC_noHUC.xlsx", sheet "2018-2021_NoHUC", as the Internet Archive keeps it). Published April 2, 2024. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  17. 17.Department of the Interior and Local Government (DILG). Directory of LGU Elective Officials for Term 2025-2028 as of February 2026 (its sheet: Consolidated List of Officials for Election Terms (2025-2028)), released through the FOI portal. Published February 2026. Read by Scene October 2, 2026. A work of the Government of the Philippines: RA 8293, Section 176 (no copyright subsists in it; exploiting it for profit needs the agency's prior approval). Open the source
  18. 18.Commission on Elections (COMELEC), Records and Statistics Division, ERSD. List of Elected City/Municipal Candidates, May 9, 2022 National and Local Elections. Published December 23, 2025. Read by Scene October 2, 2026. Public domain: comelec.gov.ph says "All content is in the public domain unless otherwise stated." Each list carries COMELEC's data privacy notice (RA 10173).. Open the source
  19. 19.Commission on Elections (COMELEC), Records and Statistics Division, ERSD. List of Elected City/Municipal Candidates, May 13, 2019 National and Local Elections. Published December 23, 2025. Read by Scene October 2, 2026. Public domain: comelec.gov.ph says "All content is in the public domain unless otherwise stated." Each list carries COMELEC's data privacy notice (RA 10173).. Open the source
  20. 20.Commission on Elections (COMELEC), Records and Statistics Division, ERSD. List of Elected City/Municipal Candidates, May 9, 2016 National and Local Elections (its pages are headed "LIST OF ELECED CITY/MUNICIPAL CANDIDATES"). Published January 12, 2026. Read by Scene October 2, 2026. Public domain: comelec.gov.ph says "All content is in the public domain unless otherwise stated." Each list carries COMELEC's data privacy notice (RA 10173).. Open the source
  21. 21.Commission on Elections (COMELEC), Records and Statistics Division, ERSD. List of Elected City/Municipal Candidates, May 13, 2013 National and Local Elections. Published January 12, 2026. Read by Scene October 2, 2026. Public domain: comelec.gov.ph says "All content is in the public domain unless otherwise stated." Each list carries COMELEC's data privacy notice (RA 10173).. Open the source
  22. 22.Commission on Elections (COMELEC), Records and Statistics Division, ERSD. List of Elected City/Municipal Candidates, May 10, 2010 National and Local Elections. Published January 8, 2026. Read by Scene October 2, 2026. Public domain: comelec.gov.ph says "All content is in the public domain unless otherwise stated." Each list carries COMELEC's data privacy notice (RA 10173).. Open the source
  23. 23.Commission on Elections (COMELEC), Records and Statistics Division, ERSD. List of Elected City/Municipal Candidates, May 14, 2007 National and Local Elections. Published January 14, 2026. Read by Scene October 2, 2026. Public domain: comelec.gov.ph says "All content is in the public domain unless otherwise stated." Each list carries COMELEC's data privacy notice (RA 10173).. Open the source
  24. 24.Commission on Elections (COMELEC), Records and Statistics Division, ERSD. List of Elected City/Municipal Candidates, May 10, 2004 National and Local Elections (its pages are headed "LIST OF CITY/MUNICIPAL CANDIDATES"). Published January 14, 2026. Read by Scene October 2, 2026. Public domain: comelec.gov.ph says "All content is in the public domain unless otherwise stated." Each list carries COMELEC's data privacy notice (RA 10173).. Open the source
  25. 25.Commission on Elections (COMELEC), Records and Statistics Division, ERSD. List of Elected City/Municipal Candidates, May 14, 2001 National and Local Elections. Published January 8, 2026. Read by Scene October 2, 2026. Public domain: comelec.gov.ph says "All content is in the public domain unless otherwise stated." Each list carries COMELEC's data privacy notice (RA 10173).. Open the source
  26. 26.European Union and the European Space Agency (Copernicus), from DLR and Airbus Defence and Space (WorldDEM). Copernicus DEM GLO-30: global digital surface model at 30 m, one-degree tiles (2021 release). Published 2021. Read by Scene October 2, 2026. Copernicus DEM GLO-30 licence: free, any use including commercial, with the Copernicus notice. Open the source
  27. 27.OpenStreetMap contributors, extract by Geofabrik. Named rivers, lakes, reservoirs, peaks and the coastline of the Philippines in OpenStreetMap (Geofabrik extract, cut by osmium). Published September 30, 2026. Read by Scene October 2, 2026. ODbL 1.0. Open the source
  28. 28.Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), Climatology and Agrometeorology Division. Climate Map of the Philippines (1951-2010), Modified Coronas Climate Classification. Published August 2014. Read by Scene October 2, 2026. A work of the Government of the Philippines: no copyright (RA 8293 s.176.1); PAGASA's approval is needed to use it for profit. Open the source
  29. 29.Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), Climatology and Agrometeorology Division. Climatological Normals, 1991-2020, by synoptic station (one PDF each). Published January 2022. Read by Scene October 2, 2026. A work of the Government of the Philippines: no copyright (RA 8293 s.176.1); PAGASA's approval is needed to use it for profit. Open the source
  30. 30.Philippine Statistics Authority. 2015 Census of Population, Statistical Tables, Table 1: Population Enumerated in Various Censuses by City/Municipality, 1960-2015 (one workbook for each province, highly urbanized city and region). Published 2017. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  31. 31.Philippine Statistics Authority. 2020 Census of Population and Housing: Table A (Population and Annual Growth Rate for the Philippines and its Regions, Provinces and Highly Urbanized Cities) and Table B (Population and Annual Growth Rates by Province, City and Municipality, by Region). Published July 2021. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  32. 32.Philippine Statistics Authority. 2020 Census of Population and Housing: Household Population by Age Group and Sex, for the Philippines and its regions, provinces, cities and municipalities (revised file, psa.gov.ph/system/files/phcd/2022-12/). Published December 2022. Read by Scene October 8, 2026. CC BY (PSA Terms of Use). Open the source

Scene adds what the sources do not print themselves: growth rates, shares, barangay areas and densities, coordinates, neighbours and distances, each computed from the figures and borders above. How each is made.

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Cite this page

Scene.ph. “Sergio Osmeña Sr., Zamboanga del Norte.” Scene Atlas. Updated October 9, 2026. https://scene.ph/atlas/zamboanga-del-norte/sergio-osmena-sr