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Municipality

San Mateo

San Mateo is a municipality in Isabela, Cagayan Valley, Philippines. Its population was 67,433 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 San Mateo by the figure chosen; the key beside it says what each colour means.
Alfonso ListaAliciaAuroraCabatuanCauayan CityRamonBacarreña: 873 people, 831 per km², −1.88% a yearBagong Sikat: 2,658 people, 432 per km², 1.36% a yearBella Luz: 1,353 people, 333 per km², −0.56% a yearDaramuangan Sur: 1,529 people, 974 per km², 0.98% a yearEstrella: 1,643 people, 600 per km², 2.54% a yearGaddanan: 2,292 people, 327 per km², 0.76% a yearMalasin: 2,464 people, 584 per km², −0.95% a yearMapuroc: 739 people, 227 per km², 1.03% a yearMarasat Grande: 1,592 people, 2,959 per km², 0.26% a yearMarasat Pequeño: 2,254 people, 566 per km², 0.34% a yearOld Centro I: 2,114 people, 1,578 per km², 0.61% a yearOld Centro II: 1,038 people, 567 per km², 1.04% a yearBarangay I: 1,910 people, 2,465 per km², 0.44% a yearBarangay II: 1,901 people, 4,976 per km², −0.36% a yearBarangay III: 2,180 people, 5,973 per km², −0.09% a yearBarangay IV: 3,190 people, 8,076 per km², 0.43% a yearSalinungan East: 2,787 people, 981 per km², 0.26% a yearSalinungan West: 6,460 people, 1,417 per km², 2.32% a yearSan Andres: 921 people, 258 per km², −0.41% a yearSan Antonio: 1,128 people, 400 per km², 0.76% a yearSan Ignacio: 1,223 people, 886 per km², 0.86% a yearSan Manuel: 1,950 people, 580 per km², 0.40% a yearSan Marcos: 1,847 people, 548 per km², 0.34% a yearSan Roque: 1,278 people, 306 per km², 0.47% a yearSinamar Norte: 4,332 people, 523 per km², −1.13% a yearSinamar Sur: 2,195 people, 739 per km², 0.43% a yearVictoria: 4,470 people, 533 per km², −1.93% a yearVillafuerte: 2,223 people, 397 per km², −0.09% a yearVilla Cruz: 1,446 people, 237 per km², 1.95% a yearVilla Magat: 1,066 people, 363 per km², 0.11% a yearVilla Gamiao: 788 people, 158 per km², −0.27% a yearDagupan: 1,601 people, 609 per km², −0.09% a yearDaramuangan Norte: 1,988 people, 581 per km², −0.08% 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

    67,433

    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 10.9% from 2010 to 2024

  • Rank by peopleSources

    7th

    of the 37 cities and municipalities of Isabela 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 4 of every 100 people in Isabela lived in San Mateo in 2024 (3.89%)

  • Inside itSources

    33

    barangays

  • LandSources

    242.10 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: San Mateo's land would fill a square about 15.6 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: 279 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 3 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

    17,807

    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

    17.5%

    About 18 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
0203132000[4]Formerly 023132000
ZIP code
3318[15, 16, 17]

People

San Mateo had 67,433 people in the 2024 census, up 10.9% 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.

San Mateo had the 7th most people of the 37 cities and municipalities of Isabela in 2024[1]
  1. 4Echague91,320
  2. 5Tumauini77,153
  3. 6Alicia74,699
  4. 7San Mateo67,433
  5. 8Roxas66,593
  6. 9San Mariano61,876
  7. 10Ramon57,412
All 37 cities and municipalities of Isabela
In 2024, the 10 barangays with the most people held about 49 of every 100 of its people[2]
  1. Salinungan West6,46010 in 100
  2. Victoria4,4707 in 100
  3. Sinamar Norte4,3326 in 100
  4. Barangay IV3,1905 in 100
  5. Salinungan East2,7874 in 100
  6. Bagong Sikat2,6584 in 100
  7. Malasin2,4644 in 100
  8. Gaddanan2,2923 in 100
  9. Marasat Pequeño2,2543 in 100
  10. Villafuerte2,2233 in 100
See all 33 barangays of San Mateo
Age structure · 2020 Census[36]People living in households, by age and sex
  • About 27 of every 100 are children under 15 (26.7%)
  • About 66 of every 100 are of working age, 15 to 64 (66.4%)
  • About 7 of every 100 are 65 or older (6.9%)
MenWomen

The figures by age

People by age group, men and women
AgePeopleMenWomen
0 - 45,6102,8922,718
5 - 95,8953,0192,876
10 - 146,3153,2203,095
15 - 195,9363,0392,897
20 - 245,5842,9032,681
25 - 295,1912,6402,551
30 - 345,0582,5842,474
35 - 394,6512,3862,265
40 - 444,4502,3062,144
45 - 493,8231,9351,888
50 - 543,7511,9131,838
55 - 593,1561,5491,607
60 - 642,6561,3061,350
65 - 691,844874970
70 - 741,216492724
75 - 79675260415
80 years and over833260573

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
67,433[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
17,807[1, 2]
People in each household, 2024
3.8 on average[1, 2]
Share of Isabela, 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
3.89%[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
17.5% (11,830 people)[5]
Men and women, 2020
33,578 men, 33,066 women[36]People living in households
Population at each census, with its source
CensusPopulationGrowth since the census beforeHouseholdsPeople per household
2024as of July 1, 202467,433[1, 2]0.28% a year17,8073.8
2020as of May 1, 202066,663[1]0.69% a year——
2015as of August 1, 201564,505[1]1.13% a year——
2010as of May 1, 201060,792[1]———
2007as of August 1, 2007; as it was then57,885[34]0.69% a year——
2000as of May 1, 2000; on today’s borders55,068[34, 35]2.59% a year——
1995as of September 1, 1995; as it was then48,861[34]0.15% a year——
1990as of May 1, 1990; as it was then48,461[34]1.65% a year——
1980as of May 1, 1980; as it was then41,152[34]3.56% a year——
1975as of May 1, 1975; as it was then34,546[34]3.14% a year——
1970as of May 6, 1970; as it was then29,604[34]1.91% a year——
1960as of February 15, 1960; as it was then24,402[34]———

Barangays

San Mateo is made up of 33 barangays.
Barangays of San Mateo. Each column heading sorts the table.
[2, 3, 5, 6, 7]Share (2024)Urban or rural
Bacarreña8731.29%−1.88% a yearabout 1.05 km²Rural
Bagong Sikat2,6583.94%1.36% a yearabout 6.15 km²Rural
Barangay I1,9102.83%0.44% a yearabout 0.775 km²Rural
Barangay II1,9012.82%−0.36% a yearabout 0.382 km²Rural
Barangay III2,1803.23%−0.09% a yearabout 0.365 km²Urban
Barangay IV3,1904.73%0.43% a yearabout 0.395 km²Urban
Bella Luz1,3532.01%−0.56% a yearabout 4.06 km²Rural
Dagupan1,6012.37%−0.09% a yearabout 2.63 km²Rural
Daramuangan Norte1,9882.95%−0.08% a yearabout 3.42 km²Rural
Daramuangan Sur1,5292.27%0.98% a yearabout 1.57 km²Rural
Estrella1,6432.44%2.54% a yearabout 2.74 km²Rural
Gaddanan2,2923.4%0.76% a yearabout 7.01 km²Rural
Malasin2,4643.65%−0.95% a yearabout 4.22 km²Rural
Mapuroc7391.1%1.03% a yearabout 3.25 km²Rural
Marasat Grande1,5922.36%0.26% a yearabout 0.538 km²Rural
Marasat Pequeño2,2543.34%0.34% a yearabout 3.98 km²Rural
Old Centro I2,1143.13%0.61% a yearabout 1.34 km²Rural
Old Centro II1,0381.54%1.04% a yearabout 1.83 km²Rural
Salinungan East2,7874.13%0.26% a yearabout 2.84 km²Rural
Salinungan West6,4609.58%2.32% a yearabout 4.56 km²Urban
San Andres9211.37%−0.41% a yearabout 3.57 km²Rural
San Antonio1,1281.67%0.76% a yearabout 2.82 km²Rural
San Ignacio1,2231.81%0.86% a yearabout 1.38 km²Rural
San Manuel1,9502.89%0.40% a yearabout 3.36 km²Rural
San Marcos1,8472.74%0.34% a yearabout 3.37 km²Rural
San Roque1,2781.9%0.47% a yearabout 4.17 km²Rural
Sinamar Norte4,3326.42%−1.13% a yearabout 8.29 km²Rural
Sinamar Sur2,1953.26%0.43% a yearabout 2.97 km²Rural
Victoria4,4706.63%−1.93% a yearabout 8.38 km²Rural
Villa Cruz1,4462.14%1.95% a yearabout 6.10 km²Rural
Villa Gamiao7881.17%−0.27% a yearabout 4.98 km²Rural
Villa Magat1,0661.58%0.11% a yearabout 2.94 km²Rural
Villafuerte2,2233.3%−0.09% a yearabout 5.60 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

San Mateo covers 242.10 km² of land, 279 people for every km² in 2024. Its land rises to 106 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
242.10 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
279 people per km²[6]
Coordinates
16.87485° N, 121.59447° E[3]The point inside its border farthest from every edge, so it always falls within the place.
Height above the sea[31]
Lowest
61 m
Average
78 m
Highest
106 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[32]

  1. Taotao River0.7 of 36.2 km

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[33]

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 12 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
11.6% of people[20]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 12 of every 100 people in San Mateo lived below the poverty line in 2021 (11.6%)[20]

The PSA's model for every town puts it between 9.1% and 14.0%, with 90% confidence.

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

Public places

  • 6government offices
  • 2hospitals and health centres
  • 34schools
  • 5places of worship
  • 1market
  • 1station or terminal
  • 3parks

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 San Mateo. 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.[13, 14]

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
3rd district of Isabela[18, 19]

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
    Gregorio Alipio Pua[21]
    Vice mayor
    Alan Leaño Cabacungan[21]

  2. 2022–2025

    Mayor
    Gregorio Alipio Pua[22]
    Vice mayor
    Arvin Manuel Barangan[22]

  3. 2019–2022

    Mayor
    Gregorio Alipio Pua[23]
    Vice mayor
    Crispina Remigio Agcaoili[23]

  4. 2016–2019

    Mayor
    Crispina Remigio Agcaoili[24]
    Vice mayor
    Roberto Calatayud Agcaoili[24]

  5. 2013–2016

    Mayor
    Crispina Remigio Agcaoili[25]
    Vice mayor
    Roberto Calatayud Agcaoili[25]

  6. 2010–2013

    Mayor
    Crispina Remigio Agcaoili[26]
    Vice mayor
    Roberto Calatayud Agcaoili[26]

  7. 2007–2010

    Mayor
    Roberto Calatayud Agcaoili[27]
    Vice mayor
    Ernesto Ancheta Piedad Jr.[27]

  8. 2004–2007

    Mayor
    Roberto Agcaoili Sr.[28]
    Vice mayor
    Ernesto Piedad Jr.[28]

  9. 2001–2004

    Mayor
    Roberto C. Agcaoili[29]
    Vice mayor
    Eduardo R. Fermin[29]
Mayors and vice mayors of San Mateo, by term
TermMayorVice mayor
2025–2028In office as of February 2026Gregorio Alipio Pua[21]Alan Leaño Cabacungan[21]
2022–2025Gregorio Alipio Pua[22]Arvin Manuel Barangan[22]
2019–2022Gregorio Alipio Pua[23]Crispina Remigio Agcaoili[23]
2016–2019Crispina Remigio Agcaoili[24]Roberto Calatayud Agcaoili[24]
2013–2016Crispina Remigio Agcaoili[25]Roberto Calatayud Agcaoili[25]
2010–2013Crispina Remigio Agcaoili[26]Roberto Calatayud Agcaoili[26]
2007–2010Roberto Calatayud Agcaoili[27]Ernesto Ancheta Piedad Jr.[27]
2004–2007Roberto Agcaoili Sr.[28]Ernesto Piedad Jr.[28]
2001–2004Roberto C. Agcaoili[29]Eduardo R. Fermin[29]

Before 2001

The heads of San Mateo before COMELEC's lists begin, newest first, as the local government's own page lists them, with the office as that page writes it ("Not given" where it names no single office). "From" a year: the page gives only when the term began.

Heads of San Mateo before 2001, newest first
YearsNameOffice
1998–2001Feliciano V. Palomares[30]Municipal Mayor
1986–1998Venancio O. Villarta, MD[30]Municipal Mayor
1964–1986Severo G. Lachica[30]Municipal Mayor
1962–1963Braulio P. Lucas[30]Municipal Mayor
1960–1962Hermogenes L. Ramil[30]Municipal Mayor
1956–1959Marcelo J. Santiago[30]Municipal Mayor
1952–1955Mateo A. Cadeliña[30]Municipal Mayor
1947–1951Cornelio S. Alipio[30]Municipal Mayor
1943–1945Estanislao Bueno[30]Municipal Mayor
1942–1943Doroteo Barbero[30]Municipal Mayor

History & Identity

Created
San Mateo was created as an independent municipality by Executive Order No. 97 of President Sergio Osmeña, dated 7 March 1946. It was formed from barrios and sitios taken out of the municipality of Santiago, with its seat at Marasat Grande.[9]

How it got its name

The settlement was first called Marasat, and it kept that name in its barrios (Marasat Grande and Marasat Pequeño) after it became San Mateo. The sources read do not say why the name San Mateo was chosen.[11]

Its story

The place was first named Marasat. It was under the town of Cauayan from 1912 and later under Santiago (then called Carig).[12]

The town's own profile says Ilocano settlers from Ilocos Norte, led by Mateo Cadeliña, came by sea and river around 1912 and cleared farmland along the Magat River, growing tobacco first.[12]

During the Japanese occupation in 1942 a local regime called Yoshisawa ran the place, with Doroteo Barbero appointed mayor.[12]

After the liberation, Executive Order No. 97 of 1946 separated Marasat and nearby barrios from Santiago and organized them as the independent municipality of San Mateo.[9]

Severo Lachica was mayor from 1964 until 1986, when he stepped down under the revolutionary government that followed the EDSA Revolution.[12]

Timeline

  1. 1912

    Marasat, the future San Mateo, came under the political jurisdiction of Cauayan.[12]

  2. 7 March 1946

    Executive Order No. 97 organized barrios and sitios of Santiago into the independent municipality of San Mateo, raising Isabela's municipalities from sixteen to seventeen.[9]

  3. 17 March 1946

    Sources differThe municipality's own profile and history page give 17 March 1946 as the founding date, ten days after the date printed on the executive order.[12]

  4. 1964

    Severo G. Lachica began a mayoralty that lasted until 1986.[12]

  5. 1 December 2008

    Presidential Proclamation No. 1685 declared San Mateo the Agro-Ecological Destination in Cagayan Valley.[11]

Nearby

San Mateo shares a border with 6 places.

How it compares

San Mateo beside Isabela, and where it stands among the cities and municipalities of Isabela.

San Mateo beside Isabela
FigureSan MateoIsabelaRank among the cities and municipalities of Isabela
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 glossary67,433[1, 2]1,733,0487th of 37
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 glossary0.28% a year[1, 2]slower0.50% a year23rd of 37
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 glossary279[6]more crowded13815th of 37
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 glossary242.10 km²[6]12,602.70 km²15th of 37
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]about the same3.8not 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 glossary17.5%[5]lower20.9%not ranked

How far, in a straight line[3]

Ilagan City, the capital of Isabela
51.2 km northeast
Manila
262.1 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. CabatuanIsabela10.0 km northeast
  2. AliciaIsabela10.7 km southeast
  3. AuroraIsabela11.9 km north
  4. RamonIsabela13.0 km southwest
  5. San IsidroIsabela14.5 km south
  6. Alfonso ListaIfugao15.0 km northwest

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.The Lawphil Project, Arellano Law Foundation. Executive Order No. 97, March 07, 1946. Published March 7, 1946. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  10. 10.Municipality of San Mateo, Isabela. Official website. Read by Scene October 3, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  11. 11.Municipality of San Mateo, Isabela. History of San Mateo, Isabela. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  12. 12.Municipality of San Mateo, Isabela. Municipal Profile 2025, Municipality of San Mateo. Published 2025. 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. 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
  14. 14.1986 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
  15. 15.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
  16. 16.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
  17. 17.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
  18. 18.Congress of the Philippines. Republic Act No. 11080: An Act reapportioning the Province of Isabela into six (6) legislative districts. Published September 27, 2018. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  19. 19.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
  20. 20.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
  21. 21.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
  22. 22.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
  23. 23.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
  24. 24.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
  25. 25.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
  26. 26.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
  27. 27.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
  28. 28.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
  29. 29.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
  30. 30.elgu-news-cdn.e.gov.ph. MUNICIPAL PROFILE 2025.pdf. Read by Scene October 3, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  31. 31.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
  32. 32.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
  33. 33.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
  34. 34.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
  35. 35.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
  36. 36.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. “San Mateo, Isabela.” Scene Atlas. Updated October 9, 2026. https://scene.ph/atlas/isabela/san-mateo