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Highly urbanized city

Olongapo City

Olongapo City is a highly urbanized city in Zambales, Central Luzon, Philippines. Its population was 264,903 in the 2024 census, and it has 17 barangays.

  • Population: 2024 Census
  • Places: PSGC 2Q 2026
  • Checked by Scene: October 8, 2026
  • Page updated: October 8, 2026
Rooftops of Olongapo City filling the plain below a green hill, with the port of the Subic Bay Freeport and the bay beyond.
Olongapo City from Santa Rita, with the Subic Bay Freeport's port and Subic Bay beyond.Photo: “Olongapo City-Subic Freeport skyline Santa Rita (Olongapo, Zambales; 05-21-2023)” by Patrickroque01, CC BY-SA 4.0, via Wikimedia Commons; resized by Scene. Scene's copy is shared under the same licence.

  • PeopleSources

    264,903

    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 19.8% from 2010 to 2024

  • Rank by peopleSources

    1st

    of the 14 cities and municipalities of Zambales 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

  • Inside itSources

    17

    barangays

  • LandSources

    153.35 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: Olongapo City's land would fill a square about 12.4 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: 1,727 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 17 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

    70,922

    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

    98.5%

    About 99 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
0331400000[5]Formerly 037107000
ZIP code
2200[18, 19, 20]

People

Olongapo City had 264,903 people in the 2024 census, up 19.8% from 2010.
People at each census since 1970

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.

Olongapo City had the most people of the 14 cities and municipalities of Zambales in 2024[1]
  1. 1Olongapo City264,903
  2. 2Subic116,788
  3. 3Botolan70,340
  4. 4Castillejos70,105
  5. 5Santa Cruz66,647
  6. 6Iba59,580
  7. 7Masinloc56,579
All 14 cities and municipalities of Zambales
In 2024, the 10 barangays with the most people held about 86 of every 100 of its people[2]
  1. Santa Rita47,14218 in 100
  2. New Cabalan33,78213 in 100
  3. Gordon Heights31,19012 in 100
  4. Old Cabalan24,7059 in 100
  5. Barretto22,2528 in 100
  6. East Bajac-bajac19,5597 in 100
  7. Kalaklan14,8866 in 100
  8. Mabayuan12,7215 in 100
  9. New Kalalake10,5114 in 100
  10. East Tapinac9,9654 in 100
See all 17 barangays of Olongapo City
Age structure · 2024 Census[4]People living in households, by age and sex
  • About 25 of every 100 are children under 15 (24.6%)
  • About 68 of every 100 are of working age, 15 to 64 (68.3%)
  • About 7 of every 100 are 65 or older (7%)
MenWomen

The figures by age

People by age group, men and women
AgePeopleMenWomen
Under 518,6779,8558,822
5 - 922,93711,85411,083
10 - 1423,53812,05911,479
15 - 1923,78212,31411,468
20 - 2424,99512,94712,048
25 - 2923,53511,99611,539
30 - 3421,66010,98710,673
35 - 3919,1619,5469,615
40 - 4416,9778,4468,531
45 - 4914,8927,3057,587
50 - 5414,0967,1396,957
55 - 5911,5125,5885,924
60 - 6410,0344,6515,383
65 - 697,2563,2793,977
70 - 745,3402,1453,195
75 - 793,2981,1972,101
80 - 841,5484841,064
85 and over1,086271815

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
264,903[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
70,922[1, 2]
People in each household, 2024
3.7 on average[1, 2]
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
98.5% (260,816 people)[6]
Men and women, 2024
132,063 men, 132,261 women[4]People living in households
Population at each census, with its source
CensusPopulationGrowth since the census beforeHouseholdsPeople per household
2024as of July 1, 2024264,903[1, 2]0.42% a year70,9223.7
2020as of May 1, 2020260,317[1]2.36% a year——
2015as of August 1, 2015233,040[1]1.00% a year——
2010as of May 1, 2010221,178[1]———
2007as of August 1, 2007; as it was then227,270[40]2.19% a year——
2000as of May 1, 2000; on today’s borders194,260[40, 41]1.68% a year——
1995as of September 1, 1995; as it was then179,754[40]−1.35% a year——
1990as of May 1, 1990; as it was then193,327[40]2.14% a year——
1980as of May 1, 1980; as it was then156,430[40]1.23% a year——
1975as of May 1, 1975; as it was then147,109[40]6.43% a year——
1970as of May 6, 1970; as it was then107,785[40]———

Barangays

Olongapo City is made up of 17 barangays.
Colour byColours the map of Olongapo City by the figure chosen; the key beside it says what each colour means.
DinalupihanHermosaMorongSubicAsinan: 3,520 people, 14,679 per km², 0.24% a yearBanicain: 7,613 people, 43,503 per km², 0.16% a yearBarretto: 22,252 people, 4,489 per km², 0.50% a yearEast Bajac-bajac: 19,559 people, 20,919 per km², 0.21% a yearEast Tapinac: 9,965 people, 23,239 per km², 0.03% a yearGordon Heights: 31,190 people, 3,620 per km², 0.36% a yearKalaklan: 14,886 people, 1,984 per km², 0.30% a yearNew Kalalake: 10,511 people, 39,754 per km², 0.50% a yearMabayuan: 12,721 people, 8,260 per km², 0.54% a yearNew Cabalan: 33,782 people, 1,693 per km², 0.31% a yearNew Ilalim: 1,649 people, 21,388 per km², 1.32% a yearNew Kababae: 2,438 people, 21,865 per km², 0.16% a yearPag-asa: 6,736 people, 25,323 per km², 0.52% a yearSanta Rita: 47,142 people, 3,083 per km², 0.06% a yearWest Bajac-bajac: 8,825 people, 13,669 per km², 1.10% a yearWest Tapinac: 7,409 people, 44,903 per km², 0.76% a yearOld Cabalan: 24,705 people, 2,059 per km², 1.31% 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
Barangays of Olongapo City. Each column heading sorts the table.
[2, 3, 6, 7, 8, 10]Share (2024)Urban or rural
Asinan3,5201.33%0.24% a year0.24 km²Urban
Banicain7,6132.87%0.16% a yearabout 0.175 km²Urban
Barretto22,2528.4%0.50% a year4.96 km²Urban
East Bajac-bajac19,5597.38%0.21% a year0.935 km²Urban
East Tapinac9,9653.76%0.03% a year0.429 km²Urban
Gordon Heights31,19011.77%0.36% a year8.62 km²Urban
Kalaklan14,8865.62%0.30% a year7.50 km²Urban
Mabayuan12,7214.8%0.54% a yearabout 1.54 km²Urban
New Cabalan33,78212.75%0.31% a year19.96 km²Urban
New Ilalim1,6490.62%1.32% a year0.0771 km²Rural
New Kababae2,4380.92%0.16% a year0.112 km²Rural
New Kalalake10,5113.97%0.50% a year0.264 km²Urban
Old Cabalan24,7059.33%1.31% a year12.00 km²Urban
Pag-asa6,7362.54%0.52% a year0.266 km²Urban
Santa Rita47,14217.8%0.06% a year15.29 km²Urban
West Bajac-bajac8,8253.33%1.10% a year0.646 km²Urban
West Tapinac7,4092.8%0.76% a yearabout 0.165 km²Urban

Areas marked “about” are measured inside the barangay's border on UN OCHA's map; the others are as the city or municipal government publishes them.

Land & Environment

Olongapo City covers 153.35 km² of land, 1,727 people for every km² in 2024. Its land rises to 693 m above the sea and it has 45.3 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
153.35 km²[7]As listed in the 2019 Masterlist of Land Areas (LMB, DENR)The city government gives its own total as 18,500 hectares (185 km²), of which its 17 barangays take up 7,390.73 hectares.[10]
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
1,727 people per km²[7]
Coordinates
14.85695° N, 120.30361° E[3]The point inside its border farthest from every edge, so it always falls within the place.
Height above the sea[36]
Lowest
Sea level
Average
140 m
Highest
693 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

45.3 km of coastline[37]

Rivers[37]

  1. Santa Rita River8.7 km
  2. Mabayuan River8.0 km
  3. Boton River6.0 of 6.3 km
  4. Triboa River4.4 km
  5. Kalaklan River3.0 of 3.4 km
  6. Matain River1.8 of 13.5 km
  7. Santa Rita River1.7 km

Peaks[37]

  1. Mount Lobso110 m
  2. Familiar Peakheight not mapped
  3. Mount Maritanheight 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[38]

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 Cubi Pt., Subic Bay Olongapo City, the nearest PAGASA station, 8 km away[39]Averages for 1994 to 2020: 3,493 mm of rain on 118 days a year; 28.1 °C on average

Rain each month Average temperature

The figures by month

Climate at Cubi Pt., Subic Bay Olongapo City, 1994 to 2020, by month
MonthRainRainy daysAverageHighLow
January5 mm226.9 °C31.2 °C22.5 °C
February5 mm227.4 °C32.1 °C22.7 °C
March13 mm228.6 °C33.6 °C23.6 °C
April18 mm329.8 °C34.7 °C25.0 °C
May302 mm1029.5 °C33.6 °C25.4 °C
June470 mm1628.4 °C32.0 °C24.9 °C
July805 mm2127.7 °C31.1 °C24.4 °C
August864 mm2327.5 °C30.5 °C24.4 °C
September680 mm1927.6 °C30.9 °C24.3 °C
October225 mm1128.0 °C31.8 °C24.2 °C
November73 mm528.0 °C31.9 °C24.0 °C
December33 mm427.3 °C31.3 °C23.4 °C
The year3,493 mm11828.1 °C32.0 °C24.1 °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 19 m above the sea.

Life & Economy

Olongapo City's economy made ₱73.9 billion of goods and services in 2025, ₱277,776 for each person. About 12 of every 100 people lived below the poverty line in 2023.
Economy, 2025Gross domestic productThe value of all the goods and services made in a place in a year: the size of its economy. The PSA measures it for every region, province and highly urbanized city. Counted at 2018 prices, it leaves out the rise in prices, so one year can be set beside another.More in the glossary
₱73.9 billion[23]Its gross domestic product at current prices; ₱61.8 billion at 2018 prices.
Growth, 2024–2025
4.4%[24]How much more it made than the year before, at 2018 prices.
For each person, 2025
₱277,776[25]Its economy divided by its projected population, at current prices, as the PSA works it out.
Poverty, 2023Poverty 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
11.5% of people[26]Below the poverty line, by the PSA's survey.
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[5]
About 12 of every 100 people in Olongapo City lived below the poverty line in 2023 (11.5%)[26]

The PSA's survey puts it between 8.5% and 14.4%, with 95% confidence. The poverty line was ₱41,565 a person for the year.

The PSA notes: Those with CVs higher than 10% in 2023 poverty incidence among population should be used with caution.

Public places

  • 46government offices
  • 12hospitals and health centres
  • 64schools
  • 24places of worship
  • 5markets
  • 10stations and terminals
  • 6parks
  • 7beaches
  • 7monuments and memorials

Counted from OpenStreetMap[3, 9]. 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 “Olongapo” in their name, then one in each of its most populous barangays.

Government offices16

10 more government offices are listed on the pages of the barangays they stand in. See the 17 barangays of Olongapo City

Hospitals and health centres8

Markets4

Stations and terminals6

Parks3

Beaches2

Monuments and memorials5

In the Subic Bay Freeport Zone (55)

Government offices21

Hospitals and health centres4

Schools12

Places of worship4

Stations and terminals4

Parks3

Beaches5

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 Olongapo City. Its local laws, called ordinances, are passed by the Sangguniang Panlungsod (the city 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.[16, 17]

City classCity classA highly urbanized city or an independent component city governs itself apart from the province around it: its voters do not elect the governor. A component city is part of its province.More in the glossary
Highly urbanized city: it governs itself apart from the province of Zambales[5]
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
1st district of Zambales[21, 22]

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
    Rolen Co Paulino Jr.[27]
    Vice mayor
    Not named in the DILG's directory

  2. 2022–2025

    Mayor
    Rolen Co Paulino Jr.[28]
    Vice mayor
    Aquilino Yorac Cortez Jr.[28]

  3. 2019–2022

    Mayor
    Rolen Co Paulino Jr.[29]
    Vice mayor
    Aquilino Yorac Cortez Jr.[29]

  4. 2016–2019

    Mayor
    Rolen Calixto Paulino[30]
    Vice mayor
    Aquilino Yorac Cortez Jr.[30]

  5. 2013–2016

    Mayor
    Rolen Calixto Paulino[31]
    Vice mayor
    Rodel Sevilla Cerezo[31]

  6. 2010–2013

    Mayor
    James Juico Gordon Jr.[32]
    Vice mayor
    Rolen Calixto Paulino[32]

  7. 2007–2010

    Mayor
    James Juico Gordon Jr.[33]
    Vice mayor
    Cynthia Gregorio Cajudo[33]

  8. 2004–2007

    Mayor
    James Gordon[34]
    Vice mayor
    Rolen Paulino[34]

  9. 2001–2004

    Mayor
    Katherine H. Gordon[35]
    Vice mayor
    Cynthia G. Cajudo[35]
Mayors and vice mayors of Olongapo City, by term
TermMayorVice mayor
2025–2028In office as of February 2026Rolen Co Paulino Jr.[27]Not named in the DILG's directory
2022–2025Rolen Co Paulino Jr.[28]Aquilino Yorac Cortez Jr.[28]
2019–2022Rolen Co Paulino Jr.[29]Aquilino Yorac Cortez Jr.[29]
2016–2019Rolen Calixto Paulino[30]Aquilino Yorac Cortez Jr.[30]
2013–2016Rolen Calixto Paulino[31]Rodel Sevilla Cerezo[31]
2010–2013James Juico Gordon Jr.[32]Rolen Calixto Paulino[32]
2007–2010James Juico Gordon Jr.[33]Cynthia Gregorio Cajudo[33]
2004–2007James Gordon[34]Rolen Paulino[34]
2001–2004Katherine H. Gordon[35]Cynthia G. Cajudo[35]

History & Identity

Old photographs of Olongapo City

Each with the archive that holds it, its date and its rights, on its own page.

In the Archive

Olongapo City's fiesta and days

Everything listed for Olongapo City in Now

Official name
City of Olongapo[5]
Created
Chartered as the City of Olongapo by Republic Act No. 4645, approved 1 June 1966[11]

How it got its name

Local traditionIts legend tells of a village on Subic Bay led by a wise and just elder, the Apo, who was abducted and beheaded by rival tribesmen. When a boy brought back his head, the villagers met him crying "Ulo ng Apo!", the head of the elder. The cry became their call to unite, and the name of their village: Olongapo.[12]

Its story

Spanish officials first came to Subic Bay in 1866, and in 1885 the Spanish Navy set up a naval port there, the point from which Olongapo's recorded history is usually counted.[10, 13]

After the Philippine-American War, Olongapo became a pueblo of Zambales; its first recorded municipal president was Esteban Damaso, from 1901 to 1904.[10, 13]

William Allan Reed's 1904 book Negritos of Zambales lists Tagalog as the primary dialect of both Olongapo and Subig.[14]

In 1912 the town came under the American naval reservation, and its barrios were counted as part of the Municipality of Subic, governed from Barrio Matain, until the United States turned Olongapo over to the Philippine government on 7 December 1959.[10, 13]

Republic Act No. 4645 made the Municipality of Olongapo, in the Province of Zambales, the City of Olongapo, on the same territory.[11]

The eruption of Mount Pinatubo in 1991 and the closing of the US naval base in November 1992 emptied much of the city; Republic Act No. 7227 had already created the Subic Bay Metropolitan Authority to turn the base to other uses, and the Subic Bay Freeport Zone took its place.[10, 15]

Timeline

  1. 1866

    Spanish officials first come to Subic Bay.[10, 13]

  2. 1885

    The Spanish Navy sets up a naval port on the bay.[10, 13]

  3. 10 December 1899

    The Americans raise their flag in Olongapo after Filipino revolutionaries' defence of Kalaklan Ridge.[10]

  4. 1901

    Esteban Damaso becomes Olongapo's first recorded municipal president.[10, 13]

  5. 16 February 1912

    Executive Order No. 11 counts Olongapo and its barrios as part of the Municipality of Subic, under the naval reservation.[10, 13]

  6. 12 December 1941

    The Second World War reaches Subic Bay as Japanese planes bomb the Navy yard.[10, 13]

  7. 7 December 1959

    The United States turns Olongapo over to the Philippine government.[10]

  8. 1 June 1966

    Republic Act No. 4645 creates the City of Olongapo.[11]

  9. 13 March 1992

    Republic Act No. 7227 creates the Subic Bay Metropolitan Authority.[15]

  10. November 1992

    The US naval base closes.[10]

Nearby

Olongapo City shares a border with Dinalupihan, Hermosa, Morong and Subic.

How it compares

Olongapo City beside Zambales, and where it stands among the cities and municipalities of Zambales.

Olongapo City beside Zambales
FigureOlongapo CityZambalesRank among the cities and municipalities of Zambales
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 glossary264,903[1, 2]681,2251st of 14
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 glossary0.42% a year[1, 2]slower1.15% a year14th of 14
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 glossary1,727[7]more crowded1781st of 14
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 glossary153.35 km²[7]3,830.65 km²11th of 14
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 glossary98.5%[6]higher50.9%not ranked

How far, in a straight line[3]

Iba, the capital of Zambales
65.0 km northwest
Manila
80.2 km east

In a straight line between the points inside each place farthest from its edges, not by road.

The nearest towns and cities[3]

  1. HermosaBataan12.2 km southeast
  2. SubicZambales13.8 km west
  3. CastillejosZambales15.1 km northwest
  4. DinalupihanBataan15.7 km east
  5. MorongBataan17.6 km south
  6. OraniBataan18.7 km southeast

Sources

Page updated October 8, 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: Central Luzon (OpenSTAT table 0031A6DTPH2). Published August 5, 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. Household Population by Age-Group Region, Province, and Highly Urbanized City: Philippines, 2024 Census of Population (OpenSTAT table 0201A6DPAG0). Published August 7, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  5. 5.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
  6. 6.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
  7. 7.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
  8. 8.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
  9. 9.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
  10. 10.City Government of Olongapo. Barangays: the history and profile of each of the city's barangays. Published September 30, 2024. Read by Scene October 1, 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. 4645: An Act Creating the City of Olongapo (the Charter of the City of Olongapo). Published June 1, 1966. Read by Scene October 1, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  12. 12.City Government of Olongapo. The Legend of Olongapo City. Published September 30, 2024. Read by Scene October 1, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  13. 13.Reynato An. Cabatit. The Making of Olongapo, 1885–1985. Read by Scene October 1, 2026. All rights reserved by its author; cited, never copied. As cited by City Government of Olongapo. Open the source
  14. 14.William Allan Reed, Bureau of Public Printing, Manila. Negritos of Zambales (Ethnological Survey Publications, vol. II, part I). Published 1904. Read by Scene October 1, 2026. Public domain (published 1904), read in Project Gutenberg's edition. Open the source
  15. 15.Congress of the Philippines. Republic Act No. 7227: the Bases Conversion and Development Act of 1992. Published March 13, 1992. Read by Scene October 1, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
  16. 16.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
  17. 17.1986 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
  18. 18.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
  19. 19.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
  20. 20.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
  21. 21.1986 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
  22. 22.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
  23. 23.Philippine Statistics Authority. Gross Domestic Product by Province and HUC (OpenSTAT table 0012A5FPPA0). Published August 28, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  24. 24.Philippine Statistics Authority. Gross Domestic Product by Province and HUC, Growth Rates (OpenSTAT table 0032A5FPPA2). Published August 28, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  25. 25.Philippine Statistics Authority. Per Capita Gross Domestic Product by Province and HUC (OpenSTAT table 0092A5FPPA8). Published August 28, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  26. 26.Philippine Statistics Authority (PSA). Table 2a. Annual Per Capita Poverty Threshold and Poverty Incidence Among Population with Measures of Precision, by Region, Province and Highly Urbanized Cities: 2018, 2021, and 2023 (OpenSTAT table 0041F3DF02A). Published August 15, 2024. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
  27. 27.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
  28. 28.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
  29. 29.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
  30. 30.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
  31. 31.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
  32. 32.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
  33. 33.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
  34. 34.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
  35. 35.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
  36. 36.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
  37. 37.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
  38. 38.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
  39. 39.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
  40. 40.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
  41. 41.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

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. “Olongapo City, Zambales.” Scene Atlas. Updated October 8, 2026. https://scene.ph/atlas/zambales/olongapo-city