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Municipality

Rosario

Rosario is a municipality in La Union, Ilocos Region, Philippines. Its population was 58,797 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 Rosario by the figure chosen; the key beside it says what each colour means.
PugoSan FabianSanto TomasSisonTubaoAlipang: 930 people, 321 per km², −0.26% a yearAmbangonan: 683 people, 348 per km², −0.96% a yearAmlang: 2,347 people, 631 per km², −0.13% a yearBacani: 1,517 people, 1,626 per km², −0.16% a yearBangar: 821 people, 2,332 per km², 1.84% a yearBani: 1,626 people, 1,077 per km², −0.71% a yearBenteng-Sapilang: 1,420 people, 544 per km², −0.10% a yearCadumanian: 1,240 people, 747 per km², 1.36% a yearCamp One: 3,090 people, 2,835 per km², −1.16% a yearCarunuan East: 1,511 people, 512 per km², −1.26% a yearCarunuan West: 1,702 people, 507 per km², −0.18% a yearCasilagan: 670 people, 411 per km², −1.08% a yearCataguingtingan: 2,830 people, 956 per km², −0.17% a yearConcepcion: 3,790 people, 2,038 per km², −0.26% a yearDamortis: 2,479 people, 2,785 per km², −0.84% a yearGumot-Nagcolaran: 1,935 people, 654 per km², −0.11% a yearInabaan Norte: 1,927 people, 364 per km², −1.48% a yearInabaan Sur: 1,456 people, 451 per km², −0.34% a yearNagtagaan: 1,939 people, 729 per km², −1.57% a yearNangcamotian: 917 people, 615 per km², −0.23% a yearParasapas: 1,960 people, 281 per km², −1.41% a yearPoblacion East: 2,257 people, 7,304 per km², −2.32% a yearPoblacion West: 1,918 people, 3,922 per km², −0.58% a yearPuzon: 818 people, 629 per km², −0.12% a yearRabon: 1,053 people, 476 per km², −1.47% a yearSan Jose: 739 people, 582 per km², 1.77% a yearMarcos: 1,472 people, 233 per km², −0.47% a yearSubusub: 2,885 people, 1,317 per km², −0.65% a yearTabtabungao: 3,148 people, 1,124 per km², −0.78% a yearTanglag: 752 people, 340 per km², −1.12% a yearTay-ac: 2,833 people, 1,389 per km², −0.41% a yearUdiao: 2,515 people, 2,548 per km², −0.36% a yearVila: 1,617 people, 439 per km², −0.18% a year

People · 2024 Census

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

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

Density · people per km², 2024

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

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

Growth a year · 2020–2024

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

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

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

  • PeopleSources

    58,797

    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 11.6% from 2010 to 2024

  • Rank by peopleSources

    4th

    of the 20 cities and municipalities of La Union 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 La Union lived in Rosario in 2024 (7.13%)

  • Inside itSources

    33

    barangays

  • LandSources

    75.48 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: Rosario's land would fill a square about 8.7 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: 779 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 8 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

    16,390

    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

    3.6 people in each, on average, in 2024

  • Town or countrySources

    32.8%

    About 33 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
0103313000[4]Formerly 013313000
ZIP code
2506[13, 14]

People

Rosario had 58,797 people in the 2024 census, up 11.6% 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.

Rosario had the 4th most people of the 20 cities and municipalities of La Union in 2024[1]
  1. 1San Fernando City124,809
  2. 2Bauang77,670
  3. 3Agoo65,256
  4. 4Rosario58,797
  5. 5Naguilian53,443
  6. 6Aringay50,786
  7. 7Bacnotan45,203
All 20 cities and municipalities of La Union
In 2024, the 10 barangays with the most people held about 48 of every 100 of its people[2]
  1. Concepcion3,7906 in 100
  2. Tabtabungao3,1485 in 100
  3. Camp One3,0905 in 100
  4. Subusub2,8855 in 100
  5. Tay-ac2,8335 in 100
  6. Cataguingtingan2,8305 in 100
  7. Udiao2,5154 in 100
  8. Damortis2,4794 in 100
  9. Amlang2,3474 in 100
  10. Poblacion East2,2574 in 100
See all 33 barangays of Rosario
Age structure · 2020 Census[33]People living in households, by age and sex
  • About 29 of every 100 are children under 15 (28.7%)
  • About 65 of every 100 are of working age, 15 to 64 (64.5%)
  • About 7 of every 100 are 65 or older (6.8%)
MenWomen

The figures by age

People by age group, men and women
AgePeopleMenWomen
0 - 45,3732,8102,563
5 - 95,8733,0562,817
10 - 146,0103,0862,924
15 - 195,6112,8632,748
20 - 245,2682,6572,611
25 - 294,8612,4832,378
30 - 344,4272,2332,194
35 - 394,2112,1752,036
40 - 443,5301,7941,736
45 - 493,1261,6081,518
50 - 542,9601,4941,466
55 - 592,5581,2751,283
60 - 642,3051,1111,194
65 - 691,628771857
70 - 741,175496679
75 - 79546222324
80 years and over741258483

Every figure, census by census

People, 2024 CensusCensusA count of every person in the country, all on one day. The 2024 census counted people as they were on 1 July 2024.More in the glossary
58,797[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
16,390[1, 2]
People in each household, 2024
3.6 on average[1, 2]
Share of La Union, 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
7.13%[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
32.8% (19,288 people)[5]
Men and women, 2020
30,392 men, 29,811 women[33]People living in households
Population at each census, with its source
CensusPopulationGrowth since the census beforeHouseholdsPeople per household
2024as of July 1, 202458,797[1, 2]−0.59% a year16,3903.6
2020as of May 1, 202060,278[1]1.77% a year——
2015as of August 1, 201555,458[1]0.98% a year——
2010as of May 1, 201052,679[1]———
2007as of August 1, 2007; as it was then49,025[31]1.66% a year——
2000as of May 1, 2000; on today’s borders43,497[31, 32]2.72% a year——
1995as of September 1, 1995; as it was then38,376[31]1.73% a year——
1990as of May 1, 1990; as it was then35,010[31]1.78% a year——
1980as of May 1, 1980; as it was then29,331[31]2.95% a year——
1975as of May 1, 1975; as it was then25,354[31]2.77% a year——
1970as of May 6, 1970; as it was then22,118[31]2.01% a year——
1960as of February 15, 1960; as it was then18,045[31]———

Barangays

Rosario is made up of 33 barangays.
Barangays of Rosario. Each column heading sorts the table.
[2, 3, 5, 6, 7]Share (2024)Urban or rural
Alipang9301.58%−0.26% a yearabout 2.90 km²Rural
Ambangonan6831.16%−0.96% a yearabout 1.96 km²Rural
Amlang2,3473.99%−0.13% a yearabout 3.72 km²Rural
Bacani1,5172.58%−0.16% a yearabout 0.933 km²Rural
Bangar8211.4%1.84% a yearabout 0.352 km²Rural
Bani1,6262.77%−0.71% a yearabout 1.51 km²Rural
Benteng-Sapilang1,4202.42%−0.10% a yearabout 2.61 km²Rural
Cadumanian1,2402.11%1.36% a yearabout 1.66 km²Rural
Camp One3,0905.26%−1.16% a yearabout 1.09 km²Urban
Carunuan East1,5112.57%−1.26% a yearabout 2.95 km²Rural
Carunuan West1,7022.89%−0.18% a yearabout 3.36 km²Rural
Casilagan6701.14%−1.08% a yearabout 1.63 km²Rural
Cataguingtingan2,8304.81%−0.17% a yearabout 2.96 km²Rural
Concepcion3,7906.45%−0.26% a yearabout 1.86 km²Urban
Damortis2,4794.22%−0.84% a yearabout 0.89 km²Rural
Gumot-Nagcolaran1,9353.29%−0.11% a yearabout 2.96 km²Rural
Inabaan Norte1,9273.28%−1.48% a yearabout 5.30 km²Rural
Inabaan Sur1,4562.48%−0.34% a yearabout 3.23 km²Rural
Marcos1,4722.5%−0.47% a yearabout 6.31 km²Rural
Nagtagaan1,9393.3%−1.57% a yearabout 2.66 km²Rural
Nangcamotian9171.56%−0.23% a yearabout 1.49 km²Rural
Parasapas1,9603.33%−1.41% a yearabout 6.97 km²Rural
Poblacion East2,2573.84%−2.32% a yearabout 0.309 km²Urban
Poblacion West1,9183.26%−0.58% a yearabout 0.489 km²Urban
Puzon8181.39%−0.12% a yearabout 1.30 km²Rural
Rabon1,0531.79%−1.47% a yearabout 2.21 km²Rural
San Jose7391.26%1.77% a yearabout 1.27 km²Rural
Subusub2,8854.91%−0.65% a yearabout 2.19 km²Urban
Tabtabungao3,1485.35%−0.78% a yearabout 2.80 km²Rural
Tanglag7521.28%−1.12% a yearabout 2.21 km²Rural
Tay-ac2,8334.82%−0.41% a yearabout 2.04 km²Urban
Udiao2,5154.28%−0.36% a yearabout 0.987 km²Urban
Vila1,6172.75%−0.18% a yearabout 3.68 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

Rosario covers 75.48 km² of land, 779 people for every km² in 2024. Its land rises to 393 m above the sea and it has 4.6 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
75.48 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
779 people per km²[6]
Coordinates
16.23479° N, 120.46696° E[3]The point inside its border farthest from every edge, so it always falls within the place.
Height above the sea[27]
Lowest
1 m
Average
142 m
Highest
393 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

4.6 km of coastline[28]

Rivers[28]

  1. Bued River0.8 of 38.6 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 I[29]

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 Dagupan City, the nearest PAGASA station, 21 km away[30]Averages for 1991 to 2020: 2,517 mm of rain on 115 days a year; 27.8 °C on average

Rain each month Average temperature

The figures by month

Climate at Dagupan City, 1991 to 2020, by month
MonthRainRainy daysAverageHighLow
January6 mm225.9 °C30.7 °C21.0 °C
February10 mm226.4 °C31.5 °C21.4 °C
March23 mm327.8 °C32.9 °C22.8 °C
April70 mm429.5 °C34.4 °C24.5 °C
May218 mm1129.5 °C34.0 °C25.0 °C
June336 mm1629.0 °C33.3 °C24.8 °C
July533 mm2028.1 °C31.9 °C24.4 °C
August620 mm2127.7 °C31.1 °C24.4 °C
September402 mm1927.9 °C31.5 °C24.3 °C
October227 mm928.0 °C31.9 °C24.2 °C
November55 mm527.6 °C31.8 °C23.4 °C
December20 mm326.6 °C31.0 °C22.2 °C
The year2,517 mm11527.8 °C32.2 °C23.5 °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 2 m above the sea.

Life & Economy

About 11 of every 100 people lived below the poverty line in 2021.
Poverty, 2021Poverty incidenceHow many of every 100 people live in families whose income is below the poverty line: what a person needs in a year for food and other basic needs, as the PSA sets it for each province. It is an estimate, from a survey or, for a town, a statistical model, so the PSA gives a range it is likely to fall in.More in the glossary
10.7% of people[17]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 11 of every 100 people in Rosario lived below the poverty line in 2021 (10.7%)[17]

The PSA's model for every town puts it between 9.0% and 12.4%, with 90% confidence.

Public places

  • 22government offices
  • 1hospital or health centre
  • 25schools
  • 10places of worship
  • 2markets
  • 1park
  • 2monuments and memorials

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.

Where a kind has more than 8, this page shows 6: first those with “Rosario” in their name, then one in each of its most populous barangays.

Government offices11

5 more government offices are listed on the pages of the barangays they stand in. See the 33 barangays of Rosario

Hospitals and health centres1

Markets2

Parks1

Monuments and memorials2

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

Government & Leaders

A mayor leads Rosario. 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.[11, 12]

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 La Union[15, 16]

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
    Bellarmin Ancheta Flores II[18]
    Vice mayor
    Bellarmin Calderon Flores III[18]

  2. 2022–2025

    Mayor
    Bellarmin Ancheta Flores II[19]
    Vice mayor
    Bellarmin Calderon Flores III[19]

  3. 2019–2022

    Mayor
    Bellarmin Ancheta Flores II[20]
    Vice mayor
    Bellarmin Calderon Flores III[20]

  4. 2016–2019

    Mayor
    Bellarmin Calderon Flores III[21]
    Vice mayor
    Allan Selga Sabangan[21]

  5. 2013–2016

    Mayor
    Bellarmin Calderon Flores III[22]
    Vice mayor
    Allan Selga Sabangan[22]

  6. 2010–2013

    Mayor
    Bellarmin Calderon Flores III[23]
    Vice mayor
    Allan Selga Sabangan[23]

  7. 2007–2010

    Mayor
    Bellarmin Ancheta Flores II[24]
    Vice mayor
    Apolinario Parrocha Albay[24]

  8. 2004–2007

    Mayor
    Bellarmin Flores II[25]
    Vice mayor
    Apolinario Albay[25]

  9. 2001–2004

    Mayor
    Bellarmin A. Flores II[26]
    Vice mayor
    Apolinario P. Albay[26]
Mayors and vice mayors of Rosario, by term
TermMayorVice mayor
2025–2028In office as of February 2026Bellarmin Ancheta Flores II[18]Bellarmin Calderon Flores III[18]
2022–2025Bellarmin Ancheta Flores II[19]Bellarmin Calderon Flores III[19]
2019–2022Bellarmin Ancheta Flores II[20]Bellarmin Calderon Flores III[20]
2016–2019Bellarmin Calderon Flores III[21]Allan Selga Sabangan[21]
2013–2016Bellarmin Calderon Flores III[22]Allan Selga Sabangan[22]
2010–2013Bellarmin Calderon Flores III[23]Allan Selga Sabangan[23]
2007–2010Bellarmin Ancheta Flores II[24]Apolinario Parrocha Albay[24]
2004–2007Bellarmin Flores II[25]Apolinario Albay[25]
2001–2004Bellarmin A. Flores II[26]Apolinario P. Albay[26]

History & Identity

Rosario's fiesta and days

Everything listed for Rosario in Now

Created
Rosario was formerly a barrio of Santo Tomas and became a municipality in 1869. No decree creating it was found.[9]

How it got its name

Sources differOne folktale says the name comes from wild roses, rosas del rio, that grew along the river banks.[9]

Sources differAnother folktale says a mountain range looked like a rosary laid across the horizon.[9]

Its story

Rosario began as a barrio of Santo Tomas, a growing settlement of Ilocano migrants.[9]

It became a municipality in 1869, through the work of local leaders who spoke Spanish.[9]

In 1903 the Philippine Commission joined Santo Tomas to Rosario, with the town hall at Rosario.[10]

Timeline

  1. 1869

    Rosario became a municipality.[9]

  2. 9 October 1903

    Act No. 935 merged Santo Tomas into Rosario.[10]

Nearby

Rosario shares a border with 5 places.

How it compares

Rosario beside La Union, and where it stands among the cities and municipalities of La Union.

Rosario beside La Union
FigureRosarioLa UnionRank among the cities and municipalities of La Union
People, 2024CensusA count of every person in the country, all on one day. The 2024 census counted people as they were on 1 July 2024.More in the glossary58,797[1, 2]825,0724th of 20
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−0.59% a year[1, 2]slower0.08% a year20th of 20
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 glossary779[6]more crowded5287th of 20
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 glossary75.48 km²[6]1,562.16 km²10th of 20
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 glossary3.6[1, 2]lower3.7not 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 glossary32.8%[5]higher20.8%not ranked

How far, in a straight line[3]

San Fernando City, the capital of La Union
42.4 km north
Manila
191.5 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. Santo TomasLa Union8.1 km northwest
  2. PugoLa Union9.1 km north
  3. San FabianPangasinan12.2 km south
  4. TubaBenguet13.5 km northeast
  5. TubaoLa Union13.8 km north
  6. AgooLa Union14.5 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.Provincial Government of La Union. Municipality of Rosario - Provincial Government of La Union. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  10. 10.Philippine Commission. Act No. 935 (9 October 1903), reducing the fifteen municipalities of La Union to twelve. Published October 9, 1903. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  11. 11.Congress of the Philippines. 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
  12. 12.1986 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
  13. 13.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
  14. 14.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
  15. 15.1986 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
  16. 16.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
  17. 17.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
  18. 18.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
  19. 19.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
  20. 20.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
  21. 21.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
  22. 22.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
  23. 23.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
  24. 24.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
  25. 25.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
  26. 26.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
  27. 27.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
  28. 28.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
  29. 29.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
  30. 30.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
  31. 31.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
  32. 32.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
  33. 33.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. “Rosario, La Union.” Scene Atlas. Updated October 9, 2026. https://scene.ph/atlas/la-union/rosario