Municipality

San Agustin

San Agustin is a municipality in Isabela, Cagayan Valley, Philippines. Its population was 22,228 in the 2024 census, and it has 23 barangays.

Population: 2024 Census
Places: PSGC 2Q 2026
Checked by Scene: October 8, 2026
Page updated: October 9, 2026

PlacesPeopleDensityGrowth

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
22,228
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 2% from 2010 to 2024
Rank by peopleSources
31st
of the 37 cities and municipalities of Isabela by population, 2024Rank and shareWorked out by Scene from the PSA's counts: where a place stands among the places listed with it, and how many of every 100 of its parent's people live in it.More in the glossary
About 1 of every 100 people in Isabela lived in San Agustin in 2024 (1.28%)
Inside itSources
23
barangays
LandSources
305.10 km²
of land, 2019 masterlistLand areaThe land inside the place's official boundary. A square kilometre is a square 1 km on each side, about the size of 140 football fields.Explained by Scene: San Agustin's land would fill a square about 17.5 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: 73 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 1 hectares 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
5,869
households in 2024HouseholdA person living alone, or people who sleep in the same home and share their meals. A family may be one household or several.More in the glossary
3.8 people in each, on average, in 2024
Town or countrySources
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: 0203127000^[4]Formerly 023127000
ZIP code: 3314^{[14, 15, 16]}

People

San Agustin had 22,228 people in the 2024 census, up 2% from 2010.

People at each census since 1960

Counts from 2000 on are on today’s borders; earlier counts are as the place was then, so the line may step where a border moved.

San Agustin had the 31st most people of the 37 cities and municipalities of Isabela in 2024^[1]

28Santo Tomas25,997
29Santa Maria25,919
30Quirino25,205
31San Agustin22,228
32San Guillermo21,043
33Luna21,015
34Palanan18,091

All 37 cities and municipalities of Isabela

In 2024, the 10 barangays with the most people held about 66 of every 100 of its people^[2]

Masaya Sur2,50811 in 100
Mapalad1,7548 in 100
Santo Niño1,6057 in 100
Dabubu Grande1,4747 in 100
Palacian1,3526 in 100
Masaya Norte1,2786 in 100
Bautista1,2426 in 100
Masaya Centro1,2416 in 100
Salay1,1055 in 100
Virgoneza1,0585 in 100

See all 23 barangays of San Agustin

Age structure · 2020 Census^[35]People living in households, by age and sex

About 24 of every 100 are children under 15 (24.2%)
About 67 of every 100 are of working age, 15 to 64 (67.1%)
About 9 of every 100 are 65 or older (8.8%)

MenWomen

The figures by age

People by age group, men and women
Age	People	Men	Women
0 - 4	1,614	806	808
5 - 9	1,758	932	826
10 - 14	1,962	1,008	954
15 - 19	1,954	1,037	917
20 - 24	1,896	1,030	866
25 - 29	1,778	923	855
30 - 34	1,540	771	769
35 - 39	1,347	706	641
40 - 44	1,424	716	708
45 - 49	1,392	697	695
50 - 54	1,369	744	625
55 - 59	1,174	594	580
60 - 64	934	475	459
65 - 69	756	350	406
70 - 74	484	203	281
75 - 79	313	131	182
80 years and over	383	125	258

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: 22,228^{[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: 5,869^{[1, 2]}
People in each household, 2024: 3.8 on average^{[1, 2]}
Share of Isabela, 2024Rank and shareWorked out by Scene from the PSA's counts: where a place stands among the places listed with it, and how many of every 100 of its parent's people live in it.More in the glossary: 1.28%^[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: 11,248 men, 10,830 women^[35]People living in households

Population at each census, with its source
Census	Population	Growth since the census before	Households	People per household
2024as of July 1, 2024	22,228^{[1, 2]}	0.14% a year	5,869	3.8
2020as of May 1, 2020	22,096^[1]	−0.73% a year	—	—
2015as of August 1, 2015	22,880^[1]	0.93% a year	—	—
2010as of May 1, 2010	21,797^[1]	—	—	—
2007as of August 1, 2007; as it was then	20,681^[33]	0.51% a year	—	—
2000as of May 1, 2000; on today’s borders	19,927^{[33, 34]}	2.37% a year	—	—
1995as of September 1, 1995; as it was then	17,861^[33]	1.41% a year	—	—
1990as of May 1, 1990; as it was then	16,577^[33]	1.09% a year	—	—
1980as of May 1, 1980; as it was then	14,880^[33]	0.02% a year	—	—
1975as of May 1, 1975; as it was then	14,862^[33]	2.26% a year	—	—
1970as of May 6, 1970; as it was then	13,294^[33]	2.69% a year	—	—
1960as of February 15, 1960; as it was then	10,136^[33]	—	—	—

Barangays

San Agustin is made up of 23 barangays.

Barangays of San Agustin. Each column heading sorts the table.
	^{[2, 3, 5, 6, 7]}	Share (2024)			Urban or rural
Bautista	1,242	5.59%	−0.51% a year	about 19.09 km²	Rural
Calaocan	508	2.29%	0.33% a year	about 9.00 km²	Rural
Dabubu Grande	1,474	6.63%	1.68% a year	about 1.28 km²	Rural
Dabubu Pequeño	558	2.51%	−0.43% a year	about 1.18 km²	Rural
Dappig	497	2.24%	−1.40% a year	about 4.69 km²	Rural
Laoag	1,030	4.63%	0.47% a year	about 5.58 km²	Rural
Mapalad	1,754	7.89%	0.55% a year	about 20.90 km²	Rural
Masaya Centro	1,241	5.58%	−4.76% a year	about 8.86 km²	Rural
Masaya Norte	1,278	5.75%	4.38% a year	about 4.46 km²	Rural
Masaya Sur	2,508	11.28%	0.26% a year	about 12.80 km²	Rural
Nemmatan	678	3.05%	0.54% a year	about 2.65 km²	Rural
Palacian	1,352	6.08%	0.36% a year	about 15.10 km²	Rural
Panang	720	3.24%	−1.10% a year	about 3.20 km²	Rural
Quimalabasa Norte	675	3.04%	−0.56% a year	about 8.57 km²	Rural
Quimalabasa Sur	403	1.81%	0.67% a year	about 3.17 km²	Rural
Rang-ay	383	1.72%	−0.12% a year	about 1.66 km²	Rural
Salay	1,105	4.97%	0.46% a year	about 7.20 km²	Rural
San Antonio	561	2.52%	2.85% a year	about 5.81 km²	Rural
Santo Niño	1,605	7.22%	−0.38% a year	about 27.06 km²	Rural
Santos	500	2.25%	−1.16% a year	about 15.50 km²	Rural
Sinaoangan Norte	538	2.42%	−1.50% a year	about 4.59 km²	Rural
Sinaoangan Sur	560	2.52%	0.56% a year	about 3.41 km²	Rural
Virgoneza	1,058	4.76%	1.73% a year	about 3.63 km²	Rural

Areas are approximate: each is measured inside the barangay's border on UN OCHA's map, which is a guide, not the legal boundary.

Land & Environment

San Agustin covers 305.10 km² of land, 73 people for every km² in 2024. Its land rises to 536 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: 305.10 km²^[6]As listed in the 2019 Masterlist of Land Areas (LMB, DENR)
Average density, 2024Population densityHow crowded a place is on average: its people divided by its land area. 1,000 people per square kilometre is 10 people per hectare, a square of 100 by 100 metres.More in the glossary: 73 people per km²^[6]
Coordinates: 16.45738° N, 121.76304° E^[3]The point inside its border farthest from every edge, so it always falls within the place.

Height above the sea^[29]

Lowest: 85 m
Average: 161 m
Highest: 536 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]

Cagayan River17.2 of 521.5 km
Lagoy River10.3 of 39.5 km
Dibuluan River6.0 of 65.4 km

Named rivers, lakes and peaks as OpenStreetMap mapped them on 30 September 2026, and the coast within 150 m of the border. Map data © OpenStreetMap contributors, under the Open Database License.

Climate

Climate typeClimate typePAGASA sorts the country's climate into four types by when the rain falls. Type I has a dry season from November to April and a wet one for the rest of the year; Type II has no dry season, with the most rain from December to February; Type III has a short dry season; Type IV has rain spread through the year.More in the glossary

Type III^[31]

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

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

At Casiguran, the nearest PAGASA station, 45 km away^[32]Averages for 1991 to 2020: 3,994 mm of rain on 173 days a year; 26.5 °C on average

Rain each month Average temperature

The figures by month

Climate at Casiguran, 1991 to 2020, by month
Month	Rain	Rainy days	Average	High	Low
January	295 mm	16	24.0 °C	27.8 °C	20.1 °C
February	251 mm	13	24.3 °C	28.3 °C	20.2 °C
March	240 mm	13	25.4 °C	29.7 °C	21.1 °C
April	175 mm	11	26.9 °C	31.6 °C	22.3 °C
May	236 mm	13	28.1 °C	32.8 °C	23.5 °C
June	217 mm	13	28.5 °C	33.0 °C	23.9 °C
July	299 mm	15	28.0 °C	32.3 °C	23.7 °C
August	216 mm	13	28.0 °C	32.4 °C	23.7 °C
September	285 mm	15	27.7 °C	32.1 °C	23.3 °C
October	470 mm	15	26.9 °C	31.1 °C	22.7 °C
November	646 mm	18	25.9 °C	29.7 °C	22.1 °C
December	665 mm	18	24.7 °C	28.2 °C	21.3 °C
The year	3,994 mm	173	26.5 °C	30.7 °C	22.3 °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 4 m above the sea.

Life & Economy

About 12 of every 100 people lived below the poverty line in 2021.

Poverty, 2021Poverty incidenceHow many of every 100 people live in families whose income is below the poverty line: what a person needs in a year for food and other basic needs, as the PSA sets it for each province. It is an estimate, from a survey or, for a town, a statistical model, so the PSA gives a range it is likely to fall in.More in the glossary: 11.8% 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: 2nd class^[4]

About 12 of every 100 people in San Agustin lived below the poverty line in 2021 (11.8%)^[19]

The PSA's model for every town puts it between 8.7% and 15.0%, with 90% confidence.

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

Public places

1government office
29schools
1place of worship

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.

Government offices1

Nia Darip Dirip Office · San Antonio

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

Government & Leaders

A mayor leads San Agustin. 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.^{[12, 13]}

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: 4th district of Isabela^{[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.

2025–2028In office as of February 2026
Mayor
Raden Agustin Mondala^[20]
Vice mayor
Cesar Agonoy Mondala^[20]
2022–2025
Mayor
Cesar Agonoy Mondala^[21]
Vice mayor
Oliver Damaso Micu^[21]
2019–2022
Mayor
Cesar Agonoy Mondala^[22]
Vice mayor
Larry Mark Lloyd Tobes Guerrero^[22]
2016–2019
Mayor
Cesar Agonoy Mondala^[23]
Vice mayor
Virgilio Ancheta Padilla^[23]
2013–2016
Mayor
Virgilio Ancheta Padilla^[24]
Vice mayor
Cesar Agonoy Mondala^[24]
2010–2013
Mayor
Virgilio Ancheta Padilla^[25]
Vice mayor
Cesar Agonoy Mondala^[25]
2007–2010
Mayor
Virgilio Ancheta Padilla^[26]
Vice mayor
Juliever Roque Lamug^[26]
2004–2007
Mayor
Operaflor Manuel^[27]
Vice mayor
Juliever Lamug^[27]
2001–2004
Mayor
Virgilio A. Padilla^[28]
Vice mayor
Vicky L. Domingo^[28]

Mayors and vice mayors of San Agustin, by term
Term	Mayor	Vice mayor
2025–2028In office as of February 2026	Raden Agustin Mondala^[20]	Cesar Agonoy Mondala^[20]
2022–2025	Cesar Agonoy Mondala^[21]	Oliver Damaso Micu^[21]
2019–2022	Cesar Agonoy Mondala^[22]	Larry Mark Lloyd Tobes Guerrero^[22]
2016–2019	Cesar Agonoy Mondala^[23]	Virgilio Ancheta Padilla^[23]
2013–2016	Virgilio Ancheta Padilla^[24]	Cesar Agonoy Mondala^[24]
2010–2013	Virgilio Ancheta Padilla^[25]	Cesar Agonoy Mondala^[25]
2007–2010	Virgilio Ancheta Padilla^[26]	Juliever Roque Lamug^[26]
2004–2007	Operaflor Manuel^[27]	Juliever Lamug^[27]
2001–2004	Virgilio A. Padilla^[28]	Vicky L. Domingo^[28]

History & Identity

Stories from Cagayan Valley

San Agustin has no Story of its own yet. This one is about Cagayan Valley, which San Agustin is part of.

Film, 1:00
Cagayan Valley
Cagayan Valley: the cave and the giant province
A foot bone found in Callao Cave in 2007 led to Homo luzonensis, a human species named in 2019. The valley above was once one province covering all of northeast Luzon.
This Happened Here

All Stories

Created: Executive Order No. 269 of President Quirino, dated 28 September 1949, created the municipality of San Agustin in Isabela out of the southern portion of Jones. It was to begin to exist once its first officials qualified, and not before 15 November 1949.^[9]

Its story

The town's own history page says the area was once forest and hinterland, home to Ilongot people and bands of Aetas called Pogots. It was then part of the municipality of Echague.^[11]

A group of pioneers led by Juan Gumpal, Antonio Pintang and Vicente Taguiam went out from Echague into the wilderness. They explored the valleys on both sides of the Cagayan River and set up scattered settlements.^[11]

The page says the settlers suffered from malaria and clashes with the Ilongots, but stayed, made friends with the Ilongots and Aetas and put down permanent roots.^[11]

By 1949 the area belonged to the municipality of Jones. An Executive Order of 28 September 1949 created San Agustin from the southern part of Jones.^[9]

The order named Dappig as the seat of government, along with eleven other barrios, among them Masaya Norte, Masaya Sur and Masaya Centro.^[9]

Timeline

28 September 1949
Executive Order No. 269 created the municipality of San Agustin from the southern part of Jones.^[9]
15 November 1949
Earliest date on which San Agustin could begin to exist as a municipality, once its officials qualified.^[9]

Nearby

San Agustin shares a border with Aglipay, Jones and Maddela.

How it compares

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

San Agustin beside Isabela
Figure	San Agustin	Isabela	Rank among the cities and municipalities of Isabela
People, 2024CensusA count of every person in the country, all on one day. The 2024 census counted people as they were on 1 July 2024.More in the glossary	22,228^{[1, 2]}	1,733,048	31st of 37
Growth a year, 2020–2024Growth a yearHow fast the number of people changed each year between two censuses. 1% a year means about 1 more person for every 100 people, each year.More in the glossary	0.14% a year^{[1, 2]}slower	0.50% a year	34th of 37
People per km², 2024Population densityHow crowded a place is on average: its people divided by its land area. 1,000 people per square kilometre is 10 people per hectare, a square of 100 by 100 metres.More in the glossary	73^[6]less crowded	138	29th of 37
Land areaLand areaThe land inside the place's official boundary. A square kilometre is a square 1 km on each side, about the size of 140 football fields.More in the glossary	305.10 km²^[6]	12,602.70 km²	14th of 37
People in each household, 2024HouseholdA person living alone, or people who sleep in the same home and share their meals. A family may be one household or several.More in the glossary	3.8^{[1, 2]}about the same	3.8	not 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 glossary	0%^[5]lower	20.9%	not ranked

Shares a border with^[3]

How far, in a straight line^[3]

Ilagan City, the capital of Isabela: 79.3 km north
Manila: 223.4 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]

AglipayQuirino15.0 km west
MaddelaQuirino15.6 km south
JonesIsabela17.5 km northeast
SagudayQuirino22.0 km northwest
EchagueIsabela24.5 km north
CabarroguisQuirino30.1 km west

Sources

Page updated October 9, 2026. Sources checked by Scene October 8, 2026.

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.Philippine Statistics Authority. Total Population, Household Population, and Number of Households by Province, City, Municipality, and Barangay as of 01 July 2024: Cagayan Valley (OpenSTAT table 0021A6DTPH1). Published August 4, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
3.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.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.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.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.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.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.Lawphil Project, Arellano Law Foundation. Executive Order No. 269, Organizing a Portion of the Municipality of Jones, Province of Isabela, into an Independent Municipality under the Name of San Agustin. Published September 28, 1949. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
10.Municipality of San Agustin, Isabela. Official website. Read by Scene October 3, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
11.Municipality of San Agustin, Isabela. San Agustin, Isabela: About (History). Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
12.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
13.1986 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
14.Philippine Postal Corporation (PHLPost). ZIP Code Locator. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1; a government-owned corporation's work is the Government's, Section 171.9). Open the source
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.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.Congress of the Philippines. Republic Act No. 11080: An Act reapportioning the Province of Isabela into six (6) legislative districts. Published September 27, 2018. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
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.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.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.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.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.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.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.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.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.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.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.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.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.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.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.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.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.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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Scene.ph. “San Agustin, Isabela.” Scene Atlas. Updated October 9, 2026. https://scene.ph/atlas/isabela/san-agustin