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Municipality

Diffun

Diffun is a municipality in Quirino, Cagayan Valley, Philippines. Its population was 58,254 in the 2024 census, and it has 33 barangays.

  • Population: 2024 Census
  • Places: PSGC 2Q 2026
  • Checked by Scene: October 8, 2026
  • Page updated: October 9, 2026
Colour byColours the map of Diffun by the figure chosen; the key beside it says what each colour means.
CabarroguisSantiago CityCordonDiadiKasibuQuezonSagudayAndres Bonifacio: 4,076 people, 1,270 per km², 0.23% a yearAurora East: 1,585 people, 1,481 per km², 0.06% a yearAurora West: 2,920 people, 1,074 per km², 0.10% a yearBaguio Village: 870 people, 57 per km², 0.00% a yearBalagbag: 2,028 people, 371 per km², 2.96% a yearBannawag: 2,499 people, 336 per km², 1.18% a yearCajel: 2,217 people, 259 per km², 1.52% a yearCampamento: 1,664 people, 79 per km², 1.36% a yearDiego Silang: 2,066 people, 391 per km², 1.55% a yearDon Mariano Perez, Sr.: 828 people, 38 per km², 0.71% a yearDoña Imelda: 741 people, 145 per km², 0.26% a yearDumanisi: 2,105 people, 107 per km², 0.24% a yearGabriela Silang: 2,125 people, 197 per km², 0.19% a yearGulac: 1,810 people, 410 per km², −0.13% a yearGuribang: 1,587 people, 266 per km², 1.61% a yearIfugao Village: 1,538 people, 87 per km², 0.38% a yearIsidro Paredes: 2,112 people, 394 per km², 0.05% a yearRizal: 4,338 people, 1,261 per km², 0.25% a yearLiwayway: 3,247 people, 320 per km², 2.30% a yearLuttuad: 2,327 people, 219 per km², 0.11% a yearMagsaysay: 893 people, 117 per km², 0.08% a yearMakate: 706 people, 101 per km², 0.41% a yearMaria Clara: 1,873 people, 419 per km², 0.85% a yearRafael Palma: 826 people, 150 per km², 0.98% a yearRicarte Norte: 1,906 people, 176 per km², 3.01% a yearRicarte Sur: 684 people, 197 per km², 0.35% a yearSan Antonio: 1,424 people, 1,039 per km², 1.02% a yearSan Isidro: 2,029 people, 522 per km², −0.01% a yearSan Pascual: 772 people, 202 per km², 2.84% a yearVilla Pascua: 1,653 people, 165 per km², 0.00% a yearAklan Village: 1,092 people, 222 per km², 1.79% a yearGregorio Pimentel: 877 people, 36 per km², 1.07% a yearDon Faustino Pagaduan: 836 people, 49 per km², 8.81% 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

    58,254

    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 20.1% from 2010 to 2024

  • Rank by peopleSources

    1st

    of the 6 cities and municipalities of Quirino 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 28 of every 100 people in Quirino lived in Diffun in 2024 (27.63%)

  • Inside itSources

    33

    barangays

  • LandSources

    323.28 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: Diffun's land would fill a square about 18.0 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: 180 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 2 people per hectare 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

    15,339

    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

    9.7%

    About 10 of every 100 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
0205703000[4]Formerly 025703000
ZIP code
3401[17, 18, 19]

People

Diffun had 58,254 people in the 2024 census, up 20.1% from 2010.
People at each census since 1960

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.

Diffun had the most people of the 6 cities and municipalities of Quirino in 2024[1]
  1. 1Diffun58,254
  2. 2Maddela41,867
  3. 3Cabarroguis34,720
  4. 4Aglipay31,596
  5. 5Nagtipunan26,541
  6. 6Saguday17,863
All 6 cities and municipalities of Quirino
In 2024, the 10 barangays with the most people held about 48 of every 100 of its people[2]
  1. Rizal4,3387 in 100
  2. Andres Bonifacio4,0767 in 100
  3. Liwayway3,2476 in 100
  4. Aurora West2,9205 in 100
  5. Bannawag2,4994 in 100
  6. Luttuad2,3274 in 100
  7. Cajel2,2174 in 100
  8. Gabriela Silang2,1254 in 100
  9. Isidro Paredes2,1124 in 100
  10. Dumanisi2,1054 in 100
See all 33 barangays of Diffun
Age structure · 2020 Census[37]People living in households, by age and sex
  • About 30 of every 100 are children under 15 (30.3%)
  • About 64 of every 100 are of working age, 15 to 64 (64.3%)
  • About 5 of every 100 are 65 or older (5.4%)
MenWomen

The figures by age

People by age group, men and women
AgePeopleMenWomen
0 - 45,3212,7002,621
5 - 95,8123,0162,796
10 - 145,8363,0292,807
15 - 195,3932,8052,588
20 - 244,9912,6102,381
25 - 294,6742,4742,200
30 - 344,1372,2221,915
35 - 393,8231,9821,841
40 - 443,4571,8141,643
45 - 492,9531,5281,425
50 - 542,6341,3951,239
55 - 592,1891,1131,076
60 - 641,783891892
65 - 691,261650611
70 - 74828360468
75 - 79444177267
80 years and over515170345

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
58,254[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
15,339[1, 2]
People in each household, 2024
3.8 on average[1, 2]
Share of Quirino, 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
27.63%[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
9.7% (5,661 people)[5]
Men and women, 2020
28,936 men, 27,115 women[37]People living in households
Population at each census, with its source
CensusPopulationGrowth since the census beforeHouseholdsPeople per household
2024as of July 1, 202458,254[1, 2]0.91% a year15,3393.8
2020as of May 1, 202056,102[1]1.38% a year——
2015as of August 1, 201552,569[1]1.54% a year——
2010as of May 1, 201048,501[1]———
2007as of August 1, 2007; as it was then42,958[35]1.17% a year——
2000as of May 1, 2000; on today’s borders39,489[35, 36]1.97% a year——
1995as of September 1, 1995; as it was then36,048[35]2.70% a year——
1990as of May 1, 1990; as it was then31,266[35]3.08% a year——
1980as of May 1, 1980; as it was then23,086[35]5.32% a year——
1975as of May 1, 1975; as it was then17,811[35]4.60% a year——
1970as of May 6, 1970; as it was then14,233[35]4.46% a year——
1960as of February 15, 1960; as it was then9,106[35]———

Barangays

Diffun is made up of 33 barangays.
Barangays of Diffun. Each column heading sorts the table.
[2, 3, 5, 6, 7]Share (2024)Urban or rural
Aklan Village1,0921.87%1.79% a yearabout 4.91 km²Rural
Andres Bonifacio4,0767%0.23% a yearabout 3.21 km²Urban
Aurora East1,5852.72%0.06% a yearabout 1.07 km²Urban
Aurora West2,9205.01%0.10% a yearabout 2.72 km²Rural
Baguio Village8701.49%0.00% a yearabout 15.29 km²Rural
Balagbag2,0283.48%2.96% a yearabout 5.47 km²Rural
Bannawag2,4994.29%1.18% a yearabout 7.43 km²Rural
Cajel2,2173.81%1.52% a yearabout 8.55 km²Rural
Campamento1,6642.86%1.36% a yearabout 20.96 km²Rural
Diego Silang2,0663.55%1.55% a yearabout 5.29 km²Rural
Don Faustino Pagaduan8361.44%8.81% a yearabout 17.14 km²Rural
Don Mariano Perez, Sr.8281.42%0.71% a yearabout 21.96 km²Rural
Doña Imelda7411.27%0.26% a yearabout 5.10 km²Rural
Dumanisi2,1053.61%0.24% a yearabout 19.65 km²Rural
Gabriela Silang2,1253.65%0.19% a yearabout 10.77 km²Rural
Gregorio Pimentel8771.51%1.07% a yearabout 24.39 km²Rural
Gulac1,8103.11%−0.13% a yearabout 4.41 km²Rural
Guribang1,5872.72%1.61% a yearabout 5.97 km²Rural
Ifugao Village1,5382.64%0.38% a yearabout 17.62 km²Rural
Isidro Paredes2,1123.63%0.05% a yearabout 5.36 km²Rural
Liwayway3,2475.57%2.30% a yearabout 10.14 km²Rural
Luttuad2,3273.99%0.11% a yearabout 10.62 km²Rural
Magsaysay8931.53%0.08% a yearabout 7.66 km²Rural
Makate7061.21%0.41% a yearabout 7.02 km²Rural
Maria Clara1,8733.22%0.85% a yearabout 4.47 km²Rural
Rafael Palma8261.42%0.98% a yearabout 5.52 km²Rural
Ricarte Norte1,9063.27%3.01% a yearabout 10.81 km²Rural
Ricarte Sur6841.17%0.35% a yearabout 3.48 km²Rural
Rizal4,3387.45%0.25% a yearabout 3.44 km²Rural
San Antonio1,4242.44%1.02% a yearabout 1.37 km²Rural
San Isidro2,0293.48%−0.01% a yearabout 3.89 km²Rural
San Pascual7721.33%2.84% a yearabout 3.83 km²Rural
Villa Pascua1,6532.84%0.00% a yearabout 10.01 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

Diffun covers 323.28 km² of land, 180 people for every km² in 2024. Its land rises to 1,137 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
323.28 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
180 people per km²[6]
Coordinates
16.57036° N, 121.45109° E[3]The point inside its border farthest from every edge, so it always falls within the place.
Height above the sea[32]
Lowest
81 m
Average
300 m
Highest
1,137 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[33]

  1. Dumatata River46.8 of 47.6 km
  2. Ganano River1.0 of 50.6 km
  3. Ilot River0.8 of 30.7 km

Peaks[33]

  1. Mount Blancoheight not mapped

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 III[34]

No clear rainiest time of year, and a short dry season of one to three months, in December to February or in March to May.

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

Life & Economy

About 10 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
10.1% of people[22]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 10 of every 100 people in Diffun lived below the poverty line in 2021 (10.1%)[22]

The PSA's model for every town puts it between 8.4% and 11.7%, with 90% confidence.

The PSA rates this estimate's reliability as acceptable rather than high: read it as a guide.

Public places

  • 2government offices
  • 44schools
  • 1place of worship
  • 1park

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 Diffun. 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.[15, 16]

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
Lone district of Quirino[20, 21]

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
    May Garnace Calaunan[23]
    Vice mayor
    Marlito Garnace Corpuz[23]

  2. 2022–2025

    Mayor
    May Garnace Calaunan[24]
    Vice mayor
    Marlito Garnace Corpuz[24]

  3. 2019–2022

    Mayor
    May Garnace Calaunan[25]
    Vice mayor
    Marlito Garnace Corpuz[25]

  4. 2016–2019

    Mayor
    Marlo Serrano Guillermo[26]
    Vice mayor
    Cesar Matias Agustin[26]

  5. 2013–2016

    Mayor
    Marlo Serrano Guillermo[27]
    Vice mayor
    Cesar Matias Agustin[27]

  6. 2010–2013

    Mayor
    Marlo Serrano Guillermo[28]
    Vice mayor
    Cesar Matias Agustin[28]

  7. 2007–2010

    Mayor
    May Garnace Calaunan[29]
    Vice mayor
    Nestor Bautista Gatchalian[29]

  8. 2004–2007

    Mayor
    May Calaunan[30]
    Vice mayor
    Jimmy Rosario[30]

  9. 2001–2004

    Mayor
    May G. Calaunan[31]
    Vice mayor
    Nestor B. Gatchalian[31]
Mayors and vice mayors of Diffun, by term
TermMayorVice mayor
2025–2028In office as of February 2026May Garnace Calaunan[23]Marlito Garnace Corpuz[23]
2022–2025May Garnace Calaunan[24]Marlito Garnace Corpuz[24]
2019–2022May Garnace Calaunan[25]Marlito Garnace Corpuz[25]
2016–2019Marlo Serrano Guillermo[26]Cesar Matias Agustin[26]
2013–2016Marlo Serrano Guillermo[27]Cesar Matias Agustin[27]
2010–2013Marlo Serrano Guillermo[28]Cesar Matias Agustin[28]
2007–2010May Garnace Calaunan[29]Nestor Bautista Gatchalian[29]
2004–2007May Calaunan[30]Jimmy Rosario[30]
2001–2004May G. Calaunan[31]Nestor B. Gatchalian[31]

History & Identity

How it got its name

Local traditionA local account says the name comes from a mispronunciation of the word siphon, tied to a death in the area. The name then changed into Diffun.[10]

Its story

In the early Spanish period Don Liberato Bayaua took the plains and hills of Diffun as a hacienda.[10]

Isabela first claimed the area, but the dispute was settled in favour of Nueva Vizcaya, and Diffun was formally set up as a municipality in 1950.[10]

In 1959 barrios Saguday, La Paz, Salvacion and Sto. Tomas were taken from Diffun to form Saguday municipality.[11]

In 1966 Diffun became part of the new Subprovince of Quirino.[12]

In 1969 barrios Gundaway, San Marcos and Mangandingay were separated from Diffun to help form Cabarroguis.[13]

Diffun is a second-class municipality on the northern edge of Quirino and, being near Santiago City, has become a busy business centre.[14]

Timeline

  1. 21 June 1959

    Republic Act No. 2519 took four Diffun barrios to form Saguday.[11]

  2. 18 June 1966

    Republic Act No. 4734 placed Diffun in the Subprovince of Quirino.[12]

  3. 21 June 1969

    Republic Act No. 5554 took Diffun barrios to create Cabarroguis.[13]

Nearby

Diffun shares a border with 7 places.

How it compares

Diffun beside Quirino, and where it stands among the cities and municipalities of Quirino.

Diffun beside Quirino
FigureDiffunQuirinoRank among the cities and municipalities of Quirino
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 glossary58,254[1, 2]210,8411st of 6
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 glossary0.91% a year[1, 2]faster0.81% a year3rd of 6
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 glossary180[6]more crowded672nd of 6
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 glossary323.28 km²[6]3,139.48 km²3rd of 6
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]lower3.9not 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 glossary9.7%[5]about the same9.9%not ranked

How far, in a straight line[3]

Cabarroguis, the capital of Quirino
18.9 km south
Manila
225.6 km south

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

The nearest towns and cities[3]

  1. SagudayQuirino14.0 km east
  2. DiadiNueva Vizcaya15.2 km northwest
  3. CordonIsabela15.9 km north
  4. Santiago CityIsabela17.6 km northeast
  5. CabarroguisQuirino18.9 km south
  6. QuezonNueva Vizcaya19.8 km southwest

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: Cagayan Valley (OpenSTAT table 0021A6DTPH1). Published August 4, 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.Municipality of Diffun, Quirino. Official website. Read by Scene October 3, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  10. 10.Regional Development Council Region II. municipalities of quirino. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  11. 11.Congress of the Philippines via Lawphil. Republic Act No. 2519. Published June 21, 1959. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  12. 12.Congress of the Philippines via Lawphil. Republic Act No. 4734. Published June 18, 1966. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  13. 13.Congress of the Philippines via Lawphil. Republic Act No. 5554. Published June 21, 1969. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  14. 14.Provincial Government of Quirino. MUNICIPALITY OF DIFFUN. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  15. 15.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
  16. 16.1986 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
  17. 17.Philippine Postal Corporation (PHLPost). ZIP Code Locator. 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
  18. 18.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
  19. 19.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
  20. 20.1986 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
  21. 21.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
  22. 22.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
  23. 23.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
  24. 24.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
  25. 25.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
  26. 26.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
  27. 27.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
  28. 28.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
  29. 29.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
  30. 30.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
  31. 31.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
  32. 32.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
  33. 33.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
  34. 34.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
  35. 35.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
  36. 36.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
  37. 37.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.

See something wrong on this page? Write to hello@scene.ph with the page address. We check every report against the source.

Cite this page

Scene.ph. “Diffun, Quirino.” Scene Atlas. Updated October 9, 2026. https://scene.ph/atlas/quirino/diffun