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Municipality

Narvacan

Narvacan is a municipality in Ilocos Sur, Ilocos Region, Philippines. Its population was 46,265 in the 2024 census, and it has 34 barangays.

  • Population: 2024 Census
  • Places: PSGC 2Q 2026
  • Checked by Scene: October 8, 2026
  • Page updated: October 9, 2026
Colour byColours the map of Narvacan by the figure chosen; the key beside it says what each colour means.
NagbukelPidiganPilarSan QuintinSantaSanta MariaAbuor: 1,210 people, 1,664 per km², 1.23% a yearAmbulogan: 1,503 people, 198 per km², −0.35% a yearAquib: 945 people, 323 per km², −0.25% a yearBanglayan: 1,213 people, 228 per km², 1.37% a yearBulanos: 1,029 people, 691 per km², −1.02% a yearCadacad: 788 people, 123 per km², 1.22% a yearCagayungan: 1,287 people, 452 per km², 2.14% a yearCamarao: 1,286 people, 224 per km², −1.09% a yearCasilagan: 750 people, 176 per km², −0.66% a yearCodoog: 909 people, 602 per km², −0.52% a yearDasay: 1,297 people, 351 per km², 0.30% a yearDinalaoan: 1,365 people, 1,083 per km², 1.18% a yearEstancia: 237 people, 533 per km², −3.50% a yearLanipao: 674 people, 86 per km², −0.11% a yearLungog: 2,178 people, 516 per km², −0.38% a yearMargaay: 2,676 people, 1,642 per km², 0.63% a yearMarozo: 1,415 people, 288 per km², −0.20% a yearNaguneg: 2,027 people, 716 per km², −0.41% a yearOrence: 1,908 people, 1,010 per km², −0.75% a yearPantoc: 1,100 people, 1,089 per km², −0.58% a yearParatong: 1,684 people, 2,648 per km², −0.35% a yearParparia: 1,293 people, 397 per km², −0.15% a yearQuinarayan: 2,724 people, 792 per km², −0.05% a yearRivadavia: 714 people, 567 per km², 0.07% a yearSan Antonio: 1,955 people, 922 per km², 0.26% a yearSan Jose: 1,389 people, 2,144 per km², 0.24% a yearSan Pablo: 1,259 people, 681 per km², 2.32% a yearSan Pedro: 1,999 people, 1,922 per km², −0.19% a yearSanta Lucia: 1,483 people, 2,841 per km², −0.60% a yearSarmingan: 608 people, 515 per km², −1.22% a yearSucoc: 1,566 people, 158 per km², 0.11% a yearSulvec: 2,200 people, 354 per km², −0.82% a yearTurod: 696 people, 1,110 per km², 0.92% a yearBantay Abot: 898 people, 335 per km², 0.32% 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

    46,265

    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 8.1% from 2010 to 2024

  • Rank by peopleSources

    3rd

    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 7 of every 100 people in Ilocos Sur lived in Narvacan in 2024 (6.52%)

  • Inside itSources

    34

    barangays

  • LandSources

    123.97 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: Narvacan's land would fill a square about 11.1 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: 373 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 4 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

    12,340

    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

    3.7 people in each, on average, in 2024

  • Town or countrySources

    12%

    About 12 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
0102914000[4]Formerly 012914000
ZIP code
2704[15, 16]

People

Narvacan had 46,265 people in the 2024 census, up 8.1% 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.

Narvacan had the 3rd most people of the 34 cities and municipalities of Ilocos Sur in 2024[1]
  1. 1Candon City61,315
  2. 2Vigan City54,498
  3. 3Narvacan46,265
  4. 4Tagudin41,606
  5. 5Santa Cruz41,296
  6. 6Cabugao38,981
  7. 7Bantay37,088
All 34 cities and municipalities of Ilocos Sur
In 2024, the 10 barangays with the most people held about 45 of every 100 of its people[2]
  1. Quinarayan2,7246 in 100
  2. Margaay2,6766 in 100
  3. Sulvec2,2005 in 100
  4. Lungog2,1785 in 100
  5. Naguneg2,0274 in 100
  6. San Pedro1,9994 in 100
  7. San Antonio1,9554 in 100
  8. Orence1,9084 in 100
  9. Paratong1,6844 in 100
  10. Sucoc1,5663 in 100
See all 34 barangays of Narvacan
Age structure · 2020 Census[35]People living in households, by age and sex
  • About 26 of every 100 are children under 15 (26.4%)
  • About 65 of every 100 are of working age, 15 to 64 (64.8%)
  • About 9 of every 100 are 65 or older (8.8%)
MenWomen

The figures by age

People by age group, men and women
AgePeopleMenWomen
0 - 43,9512,0911,860
5 - 94,0872,1331,954
10 - 144,1692,1192,050
15 - 194,0712,0682,003
20 - 243,7711,9191,852
25 - 293,7091,9171,792
30 - 343,4911,8181,673
35 - 393,2661,6821,584
40 - 442,8221,4521,370
45 - 492,4461,2611,185
50 - 542,3201,1971,123
55 - 592,1711,0791,092
60 - 641,830855975
65 - 691,433662771
70 - 741,022436586
75 - 79675239436
80 years and over938298640

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
46,265[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
12,340[1, 2]
People in each household, 2024
3.7 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
6.52%[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
12% (5,548 people)[5]
Men and women, 2020
23,226 men, 22,946 women[35]People living in households
Population at each census, with its source
CensusPopulationGrowth since the census beforeHouseholdsPeople per household
2024as of July 1, 202446,265[1, 2]0.02% a year12,3403.7
2020as of May 1, 202046,234[1]1.04% a year——
2015as of August 1, 201544,006[1]0.53% a year——
2010as of May 1, 201042,803[1]———
2007as of August 1, 2007; as it was then41,578[33]1.09% a year——
2000as of May 1, 2000; on today’s borders38,435[33, 34]1.72% a year——
1995as of September 1, 1995; as it was then35,489[33]0.18% a year——
1990as of May 1, 1990; as it was then35,153[33]1.37% a year——
1980as of May 1, 1980; as it was then30,682[33]1.47% a year——
1975as of May 1, 1975; as it was then28,516[33]1.13% a year——
1970as of May 6, 1970; as it was then26,962[33]0.03% a year——
1960as of February 15, 1960; as it was then26,872[33]———

Barangays

Narvacan is made up of 34 barangays.
Barangays of Narvacan. Each column heading sorts the table.
[2, 3, 5, 6, 7]Share (2024)Urban or rural
Abuor1,2102.62%1.23% a yearabout 0.727 km²Rural
Ambulogan1,5033.25%−0.35% a yearabout 7.59 km²Rural
Aquib9452.04%−0.25% a yearabout 2.93 km²Rural
Banglayan1,2132.62%1.37% a yearabout 5.31 km²Rural
Bantay Abot8981.94%0.32% a yearabout 2.68 km²Rural
Bulanos1,0292.22%−1.02% a yearabout 1.49 km²Rural
Cadacad7881.7%1.22% a yearabout 6.43 km²Rural
Cagayungan1,2872.78%2.14% a yearabout 2.85 km²Rural
Camarao1,2862.78%−1.09% a yearabout 5.73 km²Rural
Casilagan7501.62%−0.66% a yearabout 4.27 km²Rural
Codoog9091.96%−0.52% a yearabout 1.51 km²Rural
Dasay1,2972.8%0.30% a yearabout 3.70 km²Rural
Dinalaoan1,3652.95%1.18% a yearabout 1.26 km²Rural
Estancia2370.51%−3.50% a yearabout 0.445 km²Rural
Lanipao6741.46%−0.11% a yearabout 7.84 km²Rural
Lungog2,1784.71%−0.38% a yearabout 4.22 km²Rural
Margaay2,6765.78%0.63% a yearabout 1.63 km²Urban
Marozo1,4153.06%−0.20% a yearabout 4.91 km²Rural
Naguneg2,0274.38%−0.41% a yearabout 2.83 km²Rural
Orence1,9084.12%−0.75% a yearabout 1.89 km²Rural
Pantoc1,1002.38%−0.58% a yearabout 1.01 km²Rural
Paratong1,6843.64%−0.35% a yearabout 0.636 km²Rural
Parparia1,2932.79%−0.15% a yearabout 3.26 km²Rural
Quinarayan2,7245.89%−0.05% a yearabout 3.44 km²Rural
Rivadavia7141.54%0.07% a yearabout 1.26 km²Rural
San Antonio1,9554.23%0.26% a yearabout 2.12 km²Rural
San Jose1,3893%0.24% a yearabout 0.648 km²Urban
San Pablo1,2592.72%2.32% a yearabout 1.85 km²Rural
San Pedro1,9994.32%−0.19% a yearabout 1.04 km²Rural
Santa Lucia1,4833.21%−0.60% a yearabout 0.522 km²Urban
Sarmingan6081.31%−1.22% a yearabout 1.18 km²Rural
Sucoc1,5663.38%0.11% a yearabout 9.89 km²Rural
Sulvec2,2004.76%−0.82% a yearabout 6.22 km²Rural
Turod6961.5%0.92% a yearabout 0.627 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

Narvacan covers 123.97 km² of land, 373 people for every km² in 2024. Its land rises to 404 m above the sea and it has 10.6 km of coast.
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
123.97 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
373 people per km²[6]
Coordinates
17.45064° N, 120.47926° E[3]The point inside its border farthest from every edge, so it always falls within the place.
Height above the sea[29]
Lowest
Sea level
Average
62 m
Highest
404 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

10.6 km of coastline[30]

Rivers[30]

  1. Narvacan River8.9 of 19.7 km
  2. Narvacan River3.7 of 4.1 km
  3. Tangadan River2.9 km
  4. Santa Maria River1.6 of 39.3 km
  5. Tangadan River1.3 km

Peaks[30]

  1. Bantay Abotheight not mapped
  2. Mount Narvacanheight 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.

At Sinait, the nearest PAGASA station, 49 km away[32]Averages for 1991 to 2020: 2,172 mm of rain on 97 days a year; 27.4 °C on average

Rain each month Average temperature

The figures by month

Climate at Sinait, 1991 to 2020, by month
MonthRainRainy daysAverageHighLow
January6 mm225.7 °C30.2 °C21.2 °C
February3 mm226.2 °C30.7 °C21.6 °C
March5 mm227.4 °C31.8 °C23.0 °C
April17 mm228.7 °C33.0 °C24.3 °C
May173 mm929.0 °C33.0 °C24.9 °C
June282 mm1428.4 °C32.2 °C24.6 °C
July530 mm1927.7 °C31.3 °C24.1 °C
August614 mm1927.3 °C30.6 °C24.0 °C
September356 mm1527.4 °C31.0 °C23.8 °C
October135 mm727.4 °C31.4 °C23.4 °C
November46 mm427.3 °C31.5 °C23.2 °C
December6 mm226.6 °C30.9 °C22.3 °C
The year2,172 mm9727.4 °C31.5 °C23.4 °C

A station's figures describe the place around it only roughly: inland and in the hills it may be cooler and wetter. The station stands 58 m above the sea.

Life & Economy

About 16 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
16.1% 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 16 of every 100 people in Narvacan lived below the poverty line in 2021 (16.1%)[19]

The PSA's model for every town puts it between 13.7% and 18.5%, with 90% confidence.

Public places

  • 5government offices
  • 2hospitals and health centres
  • 38schools
  • 1place of worship
  • 2markets
  • 1station or terminal
  • 2parks
  • 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 Narvacan. 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
    Edna Cabalo Sanidad[20]
    Vice mayor
    Margarito Asistin Tejada[20]

  2. 2022–2025

    Mayor
    Pablito Villanueva Sanidad Sr.[21]
    Vice mayor
    Joseph Aquino Tejada[21]

  3. 2019–2022

    Mayor
    Luis Crisologo Singson[22]
    Vice mayor
    Pablito Villanueva Sanidad Sr.[22]

  4. 2016–2019

    Mayor
    Zuriel Singson Zaragoza[23]
    Vice mayor
    Fayinna Pilar Singson Zaragoza[23]

  5. 2013–2016

    Mayor
    Zuriel Singson Zaragoza[24]
    Vice mayor
    Fayinna Pilar Singson Zaragoza[24]

  6. 2010–2013

    Mayor
    Zuriel Singson Zaragoza[25]
    Vice mayor
    Charito Singson Zaragoza[25]

  7. 2007–2010

    Mayor
    Edgardo Disini Zaragoza[26]
    Vice mayor
    Charito Singson Zaragosa[26]

  8. 2004–2007

    Mayor
    Edgardo Zaragoza[27]
    Vice mayor
    Tereso Copiozo Jr.[27]

  9. 2001–2004

    Mayor
    Charito S. Zaragoza[28]
    Vice mayor
    Tereso B. Copiozo Jr.[28]
Mayors and vice mayors of Narvacan, by term
TermMayorVice mayor
2025–2028In office as of February 2026Edna Cabalo Sanidad[20]Margarito Asistin Tejada[20]
2022–2025Pablito Villanueva Sanidad Sr.[21]Joseph Aquino Tejada[21]
2019–2022Luis Crisologo Singson[22]Pablito Villanueva Sanidad Sr.[22]
2016–2019Zuriel Singson Zaragoza[23]Fayinna Pilar Singson Zaragoza[23]
2013–2016Zuriel Singson Zaragoza[24]Fayinna Pilar Singson Zaragoza[24]
2010–2013Zuriel Singson Zaragoza[25]Charito Singson Zaragoza[25]
2007–2010Edgardo Disini Zaragoza[26]Charito Singson Zaragosa[26]
2004–2007Edgardo Zaragoza[27]Tereso Copiozo Jr.[27]
2001–2004Charito S. Zaragoza[28]Tereso B. Copiozo Jr.[28]

History & Identity

Created
The town's About page says Narvacan was founded in 1589. No creation law found.[9]

Its story

The town's history page says a Spanish force sent from Vigan under Juan de Salcedo was shipwrecked on the Narvacan coast in 1576.[11]

An Augustinian parish was set up on 25 April 1587, said to be one of the first in present-day Ilocos Sur.[11]

In 1589 the governor named the first encomendero of Narvacan, the town's administrator under the encomienda system.[11]

In 1903 Act No. 934 let Narvacan keep its own boundaries when Ilocos Sur's municipalities were reduced from 24 to 14.[12]

Timeline

  1. 1576

    A Spanish party under Juan de Salcedo was shipwrecked on the coast; Spanish families set up a township, per the town's history page.[11]

  2. 25 April 1587

    Augustinians set up the Narvacan parish.[11]

  3. 1589

    Nicolas de Figueroa appointed first Encomendero de Narvacan.[11]

  4. 8 October 1903

    Act No. 934 kept Narvacan's boundaries unchanged while merging other Ilocos Sur towns.[12]

Nearby

Narvacan shares a border with 6 places.

How it compares

Narvacan beside Ilocos Sur, and where it stands among the cities and municipalities of Ilocos Sur.

Narvacan beside Ilocos Sur
FigureNarvacanIlocos 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 glossary46,265[1, 2]709,9913rd 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 glossary0.02% a year[1, 2]slower0.13% a year26th 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 glossary373[6]more crowded26816th 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 glossary123.97 km²[6]2,651.49 km²5th 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 glossary3.7[1, 2]lower3.8not 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 glossary12%[5]higher10.6%not ranked

How far, in a straight line[3]

Vigan City, the capital of Ilocos Sur
16.9 km northwest
Manila
323.0 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. NagbukelIlocos Sur8.0 km east
  2. San QuintinAbra9.0 km north
  3. Santa MariaIlocos Sur9.5 km south
  4. SantaIlocos Sur9.6 km northwest
  5. CaoayanIlocos Sur13.2 km northwest
  6. PilarAbra13.8 km southeast

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.Municipality of Narvacan. About Us. 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 Narvacan, 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.Municipality of Narvacan. Our History. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  12. 12.Philippine Commission (via The Lawphil Project). Act No. 934: An Act reducing the twenty-four municipalities of the Province of Ilocos Sur to fourteen. Published October 8, 1903. 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 Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), Climatology and Agrometeorology Division. Climatological Normals, 1991-2020, by synoptic station (one PDF each). Published January 2022. Read by Scene October 2, 2026. A work of the Government of the Philippines: no copyright (RA 8293 s.176.1); PAGASA's approval is needed to use it for profit. Open the source
  33. 33.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
  34. 34.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
  35. 35.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. “Narvacan, Ilocos Sur.” Scene Atlas. Updated October 9, 2026. https://scene.ph/atlas/ilocos-sur/narvacan