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Municipality

Gregorio del Pilar

Gregorio del Pilar is a municipality in Ilocos Sur, Ilocos Region, Philippines. Its population was 4,385 in the 2024 census, and it has 7 barangays.

  • Population: 2024 Census
  • Places: PSGC 2Q 2026
  • Checked by Scene: October 8, 2026
  • Page updated: October 9, 2026
Colour byColours the map of Gregorio del Pilar by the figure chosen; the key beside it says what each colour means.
GalimuyodQuirinoSalcedoSan EmilioSigayAlfonso: 976 people, 59 per km², −0.51% a yearBussot: 436 people, 69 per km², −0.86% a yearConcepcion: 731 people, 224 per km², −0.52% a yearDapdappig: 553 people, 59 per km², 0.31% a yearMatue-Butarag: 578 people, 36 per km², −4.06% a yearPoblacion Norte: 598 people, 247 per km², 1.59% a yearPoblacion Sur: 513 people, 777 per km², 1.46% 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

    4,385

    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 3.9% from 2010 to 2024

  • Rank by peopleSources

    32nd

    of the 34 cities and municipalities of Ilocos Sur 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 6 of every 1,000 people in Ilocos Sur lived in Gregorio del Pilar in 2024 (0.62%)

  • Inside itSources

    7

    barangays

  • LandSources

    38.90 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: Gregorio del Pilar's land would fill a square about 6.2 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: 113 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 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

    1,019

    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

    4.3 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
0102910000[4]Formerly 012910000
ZIP code
2720[15, 16]

People

Gregorio del Pilar had 4,385 people in the 2024 census, up 3.9% 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.

Gregorio del Pilar had the 32nd most people of the 34 cities and municipalities of Ilocos Sur in 2024[1]
  1. 28Alilem7,736
  2. 29San Emilio7,513
  3. 30Nagbukel5,370
  4. 31Lidlidda4,846
  5. 32Gregorio del Pilar4,385
  6. 33Sugpon4,238
  7. 34Sigay2,577
All 34 cities and municipalities of Ilocos Sur
Its 7 barangays by people, 2024 Census[2]
  1. Alfonso97622 in 100
  2. Concepcion73117 in 100
  3. Poblacion Norte59814 in 100
  4. Matue-Butarag57813 in 100
  5. Dapdappig55313 in 100
  6. Poblacion Sur51312 in 100
  7. Bussot43610 in 100
Age structure · 2020 Census[34]People living in households, by age and sex
  • About 24 of every 100 are children under 15 (23.8%)
  • About 66 of every 100 are of working age, 15 to 64 (66.2%)
  • About 10 of every 100 are 65 or older (10%)
MenWomen

The figures by age

People by age group, men and women
AgePeopleMenWomen
0 - 4329165164
5 - 9369193176
10 - 14366193173
15 - 19393194199
20 - 24347191156
25 - 29372207165
30 - 34364186178
35 - 39302150152
40 - 44264144120
45 - 49223123100
50 - 5423714097
55 - 59241126115
60 - 64211110101
65 - 691588771
70 - 741055352
75 - 79652045
80 years and over1164472

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
4,385[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
1,019[1, 2]
People in each household, 2024
4.3 on average[1, 2]
Share of Ilocos Sur, 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
0.62%[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
2,326 men, 2,136 women[34]People living in households
Population at each census, with its source
CensusPopulationGrowth since the census beforeHouseholdsPeople per household
2024as of July 1, 20244,385[1, 2]−0.47% a year1,0194.3
2020as of May 1, 20204,472[1]−1.80% a year——
2015as of August 1, 20154,875[1]2.79% a year——
2010as of May 1, 20104,219[1]———
2007as of August 1, 2007; as it was then4,308[32]0.57% a year——
2000as of May 1, 2000; on today’s borders4,134[32, 33]1.03% a year——
1995as of September 1, 1995; as it was then3,940[32]2.70% a year——
1990as of May 1, 1990; as it was then3,417[32]1.04% a year——
1980as of May 1, 1980; as it was then3,080[32]0.87% a year——
1975as of May 1, 1975; as it was then2,950[32]2.12% a year——
1970as of May 6, 1970; as it was then2,657[32]2.03% a year——
1960as of February 15, 1960; as it was then2,164[32]———

Barangays

Gregorio del Pilar is made up of 7 barangays.
Barangays of Gregorio del Pilar. Each column heading sorts the table.
[2, 3, 5, 6, 7]Share (2024)Urban or rural
Alfonso97622.26%−0.51% a yearabout 16.50 km²Rural
Bussot4369.94%−0.86% a yearabout 6.30 km²Rural
Concepcion73116.67%−0.52% a yearabout 3.27 km²Rural
Dapdappig55312.61%0.31% a yearabout 9.38 km²Rural
Matue-Butarag57813.18%−4.06% a yearabout 15.84 km²Rural
Poblacion Norte59813.64%1.59% a yearabout 2.42 km²Rural
Poblacion Sur51311.7%1.46% a yearabout 0.66 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

Gregorio del Pilar covers 38.90 km² of land, 113 people for every km² in 2024. Its land rises to 1,440 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
38.90 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
113 people per km²[6]
Coordinates
17.14303° N, 120.61223° E[3]The point inside its border farthest from every edge, so it always falls within the place.
Height above the sea[29]
Lowest
108 m
Average
536 m
Highest
1,440 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[30]

  1. Buaya River3.4 of 31.9 km

Peaks[30]

  1. Mount Tirad1,154 m
  2. Mount Ampayao905 m
  3. Mount Estileteheight not mapped
  4. Spike Peakheight 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 I[31]

Two seasons: dry from November to April, wet for the rest of the year, with the heaviest rain from June to September.

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

Life & Economy

About 19 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
19.3% of people[19]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 19 of every 100 people in Gregorio del Pilar lived below the poverty line in 2021 (19.3%)[19]

The PSA's model for every town puts it between 13.7% and 25.0%, with 90% confidence.

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

Public places

  • 1government office
  • 10schools
  • 1monument or memorial

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 Gregorio del Pilar. 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
2nd district of Ilocos Sur[17, 18]

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
    Rogelio Burgos Bicasan Jr.[20]
    Vice mayor
    Henry Sidingan Gallardo[20]

  2. 2022–2025

    Mayor
    Henry Sidingan Gallardo[21]
    Vice mayor
    Rolando Paetan Onie[21]

  3. 2019–2022

    Mayor
    Henry Sidingan Gallardo[22]
    Vice mayor
    Rolando Paetan Onie[22]

  4. 2016–2019

    Mayor
    Henry Sidingan Gallardo[23]
    Vice mayor
    Rolando Paetan Onie[23]

  5. 2013–2016

    Mayor
    Luz Caslangen Villalobos[24]
    Vice mayor
    Henry Sidingan Gallardo[24]

  6. 2010–2013

    Mayor
    Luz Caslangen Villalobos[25]
    Vice mayor
    Rolando Paetan Onie[25]

  7. 2007–2010

    Mayor
    Gilbert Maog Ciriaco[26]
    Vice mayor
    Henry Sidingan Gallardo[26]

  8. 2004–2007

    Mayor
    Gilbert Ciriaco[27]
    Vice mayor
    Henry Gallando[27]

  9. 2001–2004

    Mayor
    Gilbert M. Ciriaco[28]
    Vice mayor
    Henry S. Gallardo[28]
Mayors and vice mayors of Gregorio del Pilar, by term
TermMayorVice mayor
2025–2028In office as of February 2026Rogelio Burgos Bicasan Jr.[20]Henry Sidingan Gallardo[20]
2022–2025Henry Sidingan Gallardo[21]Rolando Paetan Onie[21]
2019–2022Henry Sidingan Gallardo[22]Rolando Paetan Onie[22]
2016–2019Henry Sidingan Gallardo[23]Rolando Paetan Onie[23]
2013–2016Luz Caslangen Villalobos[24]Henry Sidingan Gallardo[24]
2010–2013Luz Caslangen Villalobos[25]Rolando Paetan Onie[25]
2007–2010Gilbert Maog Ciriaco[26]Henry Sidingan Gallardo[26]
2004–2007Gilbert Ciriaco[27]Henry Gallando[27]
2001–2004Gilbert M. Ciriaco[28]Henry S. Gallardo[28]

History & Identity

Former name
Concepcion[4]
Created
Executive Order No. 184, signed on 23 June 1969, declared Gregorio del Pilar (then still listed as a municipal district) a municipality, effective 1 July 1968 as the order states.[9]

How it got its name

The town was first called Concepcion. Congress renamed it Gregorio del Pilar in 1955. Its tourism page says the town bears the name of the general who fought at Tirad Pass.[11, 12]

Its story

The town was known as Concepcion until 1955, when Republic Act No. 1246 changed its name to Gregorio del Pilar.[11]

In 1969 an executive order listed Gregorio del Pilar among the municipal districts declared to be municipalities.[9]

The town's own tourism page points to the Church of Nuestra Senora de Concepcion as a heritage site.[12]

Timeline

  1. 10 June 1955

    Republic Act No. 1246 approved, renaming the Municipality of Concepcion as Gregorio del Pilar.[11]

  2. 23 June 1969

    Executive Order No. 184 declared Gregorio del Pilar a municipality, effective 1 July 1968.[9]

Nearby

Gregorio del Pilar shares a border with 5 places.

How it compares

Gregorio del Pilar beside Ilocos Sur, and where it stands among the cities and municipalities of Ilocos Sur.

Gregorio del Pilar beside Ilocos Sur
FigureGregorio del PilarIlocos SurRank among the cities and municipalities of Ilocos Sur
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 glossary4,385[1, 2]709,99132nd of 34
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−0.47% a year[1, 2]slower0.13% a year33rd of 34
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 glossary113[6]less crowded26827th of 34
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 glossary38.90 km²[6]2,651.49 km²24th of 34
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 glossary4.3[1, 2]higher3.8not 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 glossary0%[5]lower10.6%not ranked

How far, in a straight line[3]

Vigan City, the capital of Ilocos Sur
53.2 km northwest
Manila
287.0 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. SalcedoIlocos Sur6.7 km west
  2. QuirinoIlocos Sur10.0 km east
  3. GalimuyodIlocos Sur10.0 km northwest
  4. San EmilioIlocos Sur10.4 km north
  5. SigayIlocos Sur10.8 km south
  6. LidliddaIlocos Sur15.5 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: Ilocos Region (OpenSTAT table 0011A6DTPH0). 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.Office of the President (via LawPhil). Executive Order No. 184, s. 1969. Published June 23, 1969. 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 Gregorio del Pilar, Ilocos Sur. 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.Lawphil Project (Arellano Law Foundation). Republic Act No. 1246. Published June 10, 1955. 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 Gregorio del Pilar. Gregorio Del Pilar, Ilocos Sur (official e-LGU site). 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, 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
  16. 16.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
  17. 17.1986 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
  18. 18.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
  19. 19.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
  20. 20.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
  21. 21.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
  22. 22.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
  23. 23.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
  24. 24.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
  25. 25.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
  26. 26.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
  27. 27.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
  28. 28.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
  29. 29.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
  30. 30.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
  31. 31.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
  32. 32.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
  33. 33.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
  34. 34.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. “Gregorio del Pilar, Ilocos Sur.” Scene Atlas. Updated October 9, 2026. https://scene.ph/atlas/ilocos-sur/gregorio-del-pilar