The Geography and Administrative Divisions of the Philippines

As of 2026-09-08 · Updated 2026-09-08 · Section: Regions & the Bangsamoro · 日本語版

0. The Seven Numbers to Know First

注 Major corrections and additions since v1.0 (the first draft) - Sulu Province belongs not to BARMM but to Region IX (Zamboanga Peninsula) (Executive Order No. 91, July 30, 2025). The first draft did not address this point. The older description treating BARMM as having 5 provinces (the pre-2025 line-up that still counted Sulu among them) is incorrect. - The population figures were out of date. The most recent confirmed figure is the 2024 census (112,729,484), not the 2020 census (109.04 million). - The designation "Region IV-B (MIMAROPA)" was renamed "MIMAROPA Region / Southwestern Tagalog Region" under RA 10879 (2016), and the label "IV-B" was formally retired (though it is still used alongside the new name in practice). - The city breakdown (HUC/ICC/component city), the Local Government Code, PSGC codes, climate classification, and biogeography were all missing from the first draft.

1. Location, Territory, and Surrounding Seas

A country close to the sea: no point within the country is more than 200 km from the coast. Of the 82 provinces, 66 (about 81%) are coastal. The claim that the Philippines is "the world's 2nd-largest archipelagic nation" is often seen, but the criterion behind that ranking is unconfirmed. The ranking "5th-largest island nation by land area" is also 注unreachable to a primary source (as of 2026-08-26) (during a 2026-08-26 source-hygiene pass, Wikipedia, which had been the underlying source, was removed as a citation) — the only ranking that has been verified is the coastline ranking above.

Two maritime laws enacted in 2024 (which legally settled the country's geography)

On November 7, 2024, President Marcos signed both into law (they took effect November 28 of the same year). (Corrected in a 2026-08-25 cross-check. The first draft had stated "November 8," but the text of RA 12064 as posted on Lawphil states "Approved: NOV 07 2024," confirming November 7 as correct. This was aligned with the description in the "Palawan and the Marine Environment" article. Source: lawphil.net/statutes/repacts/ra2024/ra_12064_2024.html)

Both laws were also transmitted to the United Nations, anchoring the country's consistency with UNCLOS and the 2016 arbitral award in domestic law. When discussing the Philippines' "geography" from 2024 onward, these legally defined maritime zones are the starting premise.

2. 7,641 Islands — the 2016 Revision

注Always cite both the old and new figures together. Most of the roughly 500-plus additional islands are uninhabited islets and reefs — this is not a case of "new islands forming," but of survey technology improving enough to detect islands that already existed. Only about 2,000 islands are inhabited, and more than 5,000 islands have no official name (Inquirer, 2019 reporting, citing NAMRIA). The top 11 islands account for 95% of the country's land area (Luzon at 109,965 km² — the 15th-largest island in the world; Mindanao at 97,530 km²). (Corrected in a 2026-08-25 cross-check. The first draft's figures of "approx. 105,000 km² / approx. 95,000 km²" were rounded values of unclear origin, 4–5% smaller than the measured figures. 注Note also that Mindanao island's 97,530 km² is a different figure from the area of the "Mindanao island group". 注(2026-08-26 source-hygiene pass) The figures 109,965 km² / 97,530 km² are unreachable to a primary source (as of 2026-08-26). The official primary source for island-by-island area would be NAMRIA, but it could not be reached; the previously relied-on source, Wikipedia, was removed as a citation. The figures are retained here but should not be cited on their own.)

3. The Three Island Groups

These are not administrative units under the constitution or the Local Government Code, but customary, statistical groupings. That said, they are symbolized by the three stars on the national flag and are used universally in statistics, media reporting, and corporate sales territories.

4. Terrain — Volcanoes, Faults, and Plains

4-1. Sitting on the Pacific Ring of Fire

Notable volcanoes: Mayon — the most frequently erupting volcano on record; Taal — south of Manila, a volcano within a caldera lake; Mount Apo — the highest peak; Mount Pinatubo — site of one of the largest eruptions of the 20th century, in 1991.

4-2. Major mountain ranges and plains

4-3. Active Faults — "The Big One"

In January 2026, the City of Manila conducted a city-wide earthquake drill (reported by outlets such as Manila Bulletin). Regarding a series of earthquakes in October 2025, PHIVOLCS Director Bacolcol stated clearly that they were "not a trigger for the West Valley Fault" (GMA News).

5. Climate — Four Modified Coronas Types

PAGASA (the Philippine Atmospheric, Geophysical and Astronomical Services Administration) divides the country into four types under the Modified Coronas Classification, based on the seasonal distribution of rainfall. Devised by Father Coronas in 1920, its distinguishing feature is that it does not take temperature or vegetation into account.

注"Dry season" and "wet season" are not uniform nationwide. Even while Manila is in its dry season (January–April), conditions differ in Davao or Cebu. Scheduling a business trip or site visit around "the Philippine dry season" is a mistake. 注The month boundaries for each type vary by 1–2 months between sources. Some sources give "Type I's dry season as December–May," others "November–April." Even the definition of a "dry month" varies by source, split between under 50 mm and under 100 mm.

6. Typhoon-Prone Territory

More tropical cyclones enter the PAR than any other maritime area in the world (PAGASA). In the Philippines, in addition to the international name, each storm is given a local name, and media coverage uses the local name.

The 2025–2026 situation

(Corrected in a 2026-08-25 cross-check. This article's figure for Uwan's evacuees — "more than 1.5 million pre-emptively evacuated" — conflicted with the "Northern Luzon and the Cordillera" article's figure of "about 1.4 million evacuated nationwide." 注(re-corrected in the 2026-08-26 source-hygiene pass): the figure "13 regions, 1,315,739 people" traced back to Wikipedia, and could not be reproduced from primary-to-quasi-primary sources reporting the NDRRMC's own figures directly. The confirmed NDRRMC tallies were as follows. - As of 2025-11-12: 1,499,979 people evacuated across 16 regions and 66 provinces (of whom 919,345 were in 9,014 evacuation centers), approximately 3.6 million people affected (Rappler, "Uwan displaced nearly 1.5 million people in 66 provinces – NDRRMC") - As of 2025-11-19: 33 dead, 7,539,110 people / 2,139,837 families affected across 16 regions and 14,854 barangays, 80,720 families in 3,169 evacuation centers, 271,023 homes damaged, 25,764 totally destroyed (PNA, "Uwan death toll hits 33, affected population over 7.5 million") Accordingly, "approximately 7.5 million" is well supported, but the evacuee figure should be stated as "16 regions, approximately 1.5 million (as of 11/12)" rather than "13 regions, 1,315,739." 注Maximum sustained winds differ by agency — 175 (JMA) / 185 (PAGASA) / 215 (JTWC) km/h — so a source must always be cited. Sources: PNA / Rappler (both reporting NDRRMC situation reports). 注ndrrmc.gov.ph itself returned an access refusal as of 2026-08-26, so the original Sitrep could not be reached.)

(Additional correction from the 2026-08-25 second cross-check. In the 2026-08-26 source-hygiene pass, sources were replaced with primary references: PNA, "Uwan death toll hits 33, affected population over 7.5 million" / PNA, "Combined deaths due to Tino, Uwan near 300" / Inquirer, "Tino causes 232 deaths…NDRRMC" / Rappler (2025-11-12 NDRRMC situation report). The breakdown of Typhoon Tino (Kalmaegi)'s 269 deaths: Cebu 150, Negros Occidental 77, Negros Oriental 23, Agusan del Sur 6, Capiz 3, Leyte/Southern Leyte/Dinagat 2 each, Antique/Bohol/Iloilo/Guimaras 1 each; 113 missing, 523 injured, 4,164,358 people / 1,186,673 families affected across 8 regions. The combined death toll from the two typhoons is 297. 注ndrrmc.gov.ph returned an access refusal, so the original Sitrep could not be reached.) - 注The figure "1,315,739" refers specifically to those "preemptively evacuated" (evacuated ahead of landfall). The nested phrasing in the first draft and the first cross-check draft — "1,315,739 evacuees, of whom more than 1.1 million were pre-emptively evacuated" — does not correspond to the source and has been corrected. The number of people displaced from their homes is a separate figure of 482,614. - 注All of Tino (Kalmaegi)'s casualty figures were leftover preliminary values. Deaths went from "more than 250" → 269; missing from "more than 100" → 113; homes totally destroyed from "42,780" → 75,681 (out of 637,263 total damaged). Since the affected-population figures conflict between this article's "more than 5.4 million" and the NDRRMC's final series of "more than 3.5 million," both are retained side by side rather than deleting either. The "Climate Change and Adaptation" article, §7-2, gave "approximately 706,000 (an initial figure)" in its first draft — meaning three different affected-population figures were circulating for the same typhoon. - Lesson: disaster statistics cannot be pinned down by citing "NDRRMC" alone. Always record which date's sitrep is being cited.

Major earthquakes of 2025–2026 (compounding with typhoons into "concurrent disasters")

Regarding the June 2026 earthquake, PHIVOLCS stated clearly that "this is not the Big One" (BusinessWorld, June 11, 2026). Its epicenter was the Cotabato Trench, a system separate from the West Valley Fault that threatens Metro Manila. 注(Corrected in a 2026-08-25 cross-check. The first draft had stated "more than 41 dead, more than 480 injured, maximum tsunami of 1.4 m, depth approx. 55 km," but these were provisional figures from immediately after the disaster. They were updated to the settled figures after cross-checking against the "Mindanao Region" article. Preliminary figures from immediately after a disaster should never be left standing as final values. 注(re-verified in the 2026-08-26 source-hygiene pass) The previously used "NDRRMC July 21, 2026 tally" traced back to a Wikipedia-sourced description and could not be reproduced from primary-to-quasi-primary sources. The highest confirmed figures from sources reporting NDRRMC announcements directly are as follows. - 2026-06-21, Sitrep No. 13: 77 dead, 1,339 injured, 31 missing - 2026-06-26: 81 dead (9 confirmed, all in Davao Region; 82 under verification), 1,315 injured, 31 missing - 2026-07-01: 88 dead, 1,316 injured, 24 missing - Early July 2026 (most recent confirmed): 92 dead (9 confirmed / 83 under verification), 1,316 injured, 20 missing, 391,231 families / 1,678,932 people affected (across 625 barangays in Regions 9, 11, 12, and BARMM), 113,370 homes damaged (94,988 partially destroyed / 18,382 totally destroyed), infrastructure damage of approximately ₱1.356 billion plus agricultural damage of approximately ₱29.84 million The epicenter was at 2026-06-08, 07:37 local time, about 32 km south of Maasim, Sarangani, at a depth of 33 km (Cotabato Trench). The tsunami reached approximately 1 m (up to approximately 1.4 m at Kiamba). Intensity VII in General Santos City, and Intensity VIII (instrumental) in Malapatan. The figures "106 dead," "damages of approximately ₱71 billion," "run-up height of 2.5 m," and "depth of 57 km (USGS)" could not be confirmed from primary-to-quasi-primary sources = 注unreachable to a primary source (as of 2026-08-26). These figures should not be cited on their own. Sources: PNA, "NDRRMC: Sarangani quake deaths now at 92" / PNA, "Sarangani quake deaths climb to 81 – NDRRMC" / PNA, "Sarangani quake death toll now at 88 – NDRRMC" / GMA News, "Nearly 1.6M persons affected by M7.8 Mindanao earthquake — NDRRMC" / ADRC disaster report (PDF). 注ndrrmc.gov.ph and phivolcs.dost.gov.ph could not be accessed during this process.) 注It is insufficient to frame "the Philippines' risk" purely as "typhoons." Since late 2025, earthquake and tsunami damage has been discussed as being on a par with typhoon damage.

7. Biogeography

Biodiversity

The Philippines is also part of the Coral Triangle, a global center of marine biodiversity.

8. The Overall Shape of Administrative Divisions — Four Tiers Plus One

(Region) — in principle an administrative coordination unit, not a local government unit
   └ Province (82)
        ├ Component City (111)
        └ Municipality (1,493)
   └ Highly Urbanized City / HUC (33) / Independent Component City / ICC (5) — independent of provinces
        └ Barangay (42,010)

An LGU (Local Government Unit) refers to one of four types: province, city, municipality, or barangay. A region is not an LGU (with the sole exception of BARMM).

9. The 18 Regions

9-1. Legal status

9-2. The list (population figures from the 2024 census / PSA)

注Sources vary on NIR's regional center, listing either Bacolod City or Dumaguete City. 注Area and population figures vary between sources depending on when they reflect the regional reorganizations (the creation of NIR and the transfer of Sulu).

注Two different figures for Sulu Province come out of "the same 2024 census" (added in a 2026-08-25 cross-check)

Because the 2024 census reference date (July 1, 2024) precedes EO 91 (July 30, 2025), the original tables published by the PSA still counted Sulu under BARMM. Recalculating using the administrative boundaries as they stand in 2026 (Sulu under Region IX) shifts the numbers.

Region	PSA's original table (Sulu counted under BARMM)	Based on 2026 administrative boundaries (this article's table)
BARMM	5,691,583	4,545,486
Region IX (Zamboanga Peninsula)	3,943,837	5,089,934

In both cases the difference is exactly Sulu Province's 1,146,097 people (2024 census), and the combined total of 9,635,420 matches under either method. 注Neither figure is "wrong," but listing one without stating its source can make 1,146,097 people appear to vanish or be double-counted. This article adopts the latter figure, aligned with the 2026 administrative boundaries. The "Mindanao Region" article adopts the former (the PSA's original table) — when cross-referencing the two articles, always consult this note. (Sources: PSA 2024 POPCEN 〈the national total is confirmed by Proclamation No. 973, 2025-07-11 = the original text on LawPhil at proc_973_2025.html〉; Sulu's transfer to Region IX is under EO 91, s. 2025, Section 3 = LawPhil eo_91_2025; BARMM's composition is under RA 11054 and RA 11550 = LawPhil. 注The regional breakdown of population and area is unreachable to a primary source (as of 2026-08-26), as the original PSA document returns an access refusal. Wikipedia was removed as a source during the 2026-08-26 source-hygiene pass.)

9-3. 2024: the creation of the Negros Island Region (NIR)

9-4. 2025: Sulu Province's transfer to Region IX (the point most often gotten wrong)

注Excluding Sulu, BARMM still currently comprises "5 provinces" (Maguindanao del Norte, Maguindanao del Sur, Lanao del Sur, Basilan, and Tawi-Tawi, plus Cotabato City and the Special Geographic Area). While Sulu's departure reduced the count by one province, the 2022 split of Maguindanao (RA 11550) added one province, leaving the total at 5. 注Nearly all sources predating 2024 are now outdated (the old line-up of 5 was Basilan, Lanao del Sur, Maguindanao, Sulu, and Tawi-Tawi). (Corrected in a 2026-08-25 cross-check. The first draft was self-contradictory, describing "4 provinces plus α" while listing 5 province names. The "Remote Islands and Frontier Areas" article also described "a 4-province structure of Basilan, Lanao del Sur, Maguindanao, and Tawi-Tawi," which does not reflect the Maguindanao split. Sources (replaced with primary sources in the 2026-08-26 source-hygiene pass): the original text of LawPhil ra_11550_2021 ("An Act Dividing the Province of Maguindanao into Two (2) Provinces…"), approved 2021-05-27, ratified by plebiscite 2022-09-17. Combined with EO 91, s. 2025, Section 3 (Sulu's transfer to Region IX) and Supreme Court decision G.R. No. 242255 (2024-09-09, Sulu's departure from BARMM), this confirms the current count of 5 provinces.)

9-5. BARMM — its first parliamentary election in September 2026

10. Provinces — 82

注NCR (Metro Manila) has no provinces. Cities in Metro Manila do not belong to any province. 注Provinces' population/area extremes shift depending on which census year is used. (Corrected in a 2026-08-25 cross-check. The first draft's population figures mixed 2015 values (Batanes at 17,246) with 2020 values (Cavite at 4,344,829); these were unified to 2024 census figures. The "Remote Islands and Frontier Areas" article correctly noted that "17,246 is a 2015 figure, not the current one," and that value was adopted. Source: PSA 2024 POPCEN (the national total confirmed against the original text of Proclamation No. 973 on LawPhil). 注The province-level breakdown (Batanes 18,937 / Cavite 4,573,884) is unreachable to a primary source (as of 2026-08-26), as the original PSA document returns an access refusal. It was only cross-checked against citypopulation.de (which is itself sourced from the PSA). Wikipedia was removed as a source during the 2026-08-26 source-hygiene pass.)

11. Cities — Why the Three Types Matter in Practice

A total of 149 cities (as of June 30, 2024, PSA).

A breakdown of the 5 ICCs (a particularly easy point to get wrong)

注Two different sets of figures circulate: "33 HUCs / 5 ICCs" and "34 HUCs / 4 ICCs." The PSA's PSGC gives 33 / 5 (as of June 11, 2024). The 2026-08-26 source-hygiene pass identified the source of the "34/4" claim: it counts Naga City (Camarines Sur) as an HUC ahead of schedule, based on Proclamation No. 1267 of 2026-05-26, which declared it an HUC. However, the ratifying plebiscite for that city is scheduled for November 2, 2026 (the same day as the barangay/SK election), so as of August 2026, its correct legal classification is still ICC — that is, the 33 / 5 figures are correct. Sources: PIA, "PBBM proclaims Naga City as highly-urbanized city"; the official Naga City site, www2.naga.gov.ph; PNA (COMELEC Minute Resolution No. 26-0526). 注Always cite the source and as-of date. HUC + ICC = 38 independent cities. These are separated from provincial tax revenue and administration. This is the most important distinction affecting which permitting/licensing window applies when setting up operations. The requirement for elevation to city status (RA 9009) is at least ₱100 million in local revenue (in constant 2000 prices) for 2 consecutive years, plus either "a population of at least 150,000" or "an area of at least 100 km²." Under RA 11683 (2022), a municipality earning at least ₱400 million a year for 2 consecutive years is exempt from the population/area requirement. On October 30, 2023, San Jose del Monte City's bid for HUC status was rejected in a plebiscite.

Reference: population of major cities (2024 census / PSA)

Taguig's +47.5% is not population growth but a boundary change. It resulted from a Supreme Court ruling under which the EMBO barangays of Makati City (Fort Bonifacio) were transferred to Taguig. 注Reading this as "Taguig experienced explosive growth" is a mistake. Cebu City was essentially flat (+0.12%). Growth in the Metro Cebu urban area has been occurring in the surrounding cities and municipalities. The capital is Manila City, but the largest city is Quezon City. Davao City, at 2,443.61 km², is the largest city by area in the country (the smallest is San Juan City, at 5.95 km²).

12. Municipalities — 1,493

Metro Manila comprises 17 LGUs — 16 cities plus the municipality of Pateros — and 1,715 barangays (2024 census). The coordinating body is the MMDA (Metropolitan Manila Development Authority, RA 7924, 1995). The top decision-making body, the Metro Manila Council, is composed of the heads of all 17 LGUs plus representatives from the leagues of vice mayors and city/municipal councilors, with only its chairperson appointed by the President. The Supreme Court has recently ruled that "the MMDA holds exclusive authority to enforce Metro Manila's traffic rules."

13. Barangays — the 42,010 Smallest Units

The practical roles barangays play (the point Japanese businesspeople most often overlook)

Barangay elections scheduled for November 2026 — though another postponement may be in motion

注As of August 25, 2026, the legally scheduled date remains "November 2, 2026," but there is a risk of a further postponement. This should not be treated as settled information.

14. The Local Government Code (RA 7160 / the Local Government Code of 1991) and Decentralization

15. The Mandanas-Garcia Ruling and Fiscal Devolution

15-1. The ruling

15-2. Trend in the amount

15-3. Devolution in practice — a deadline that has been pushed back twice

What these two extensions mean: the Mandanas ruling dramatically increased local governments' funding, but the receiving local governments' implementation capacity has not kept pace. When planning a project, bear in mind that the question of "is this permit/service handled by a national field office or by the local government" will keep shifting through 2026–2028. 注Do not rely on an outdated list of jurisdictions.

15-4. Income classification (RA 11964 / 2023)

16. The PSGC Coding System

The PSGC (Philippine Standard Geographic Code) is the standard code for administrative areas, maintained by the PSA. It underlies every address database, statistical dataset, government procurement system, and KYC process in the country.

16-1. Structure

16-2. Examples

16-3. Practical cautions

注If you hard-code PSGC codes into an internal master file, they will drift out of date every quarter. Design your systems around a regular update routine. 注The PSA's official site (psa.gov.ph/classification/psgc) sometimes blocks automated access from outside. Downloading via a browser is the reliable method.

17. Population — the 2024 Census is the Latest Confirmed Figure

Regional highs and lows (2024 census)

By island group (2024 census)

(Corrected in a 2026-08-25 cross-check. The first draft gave only 2020 census figures and noted that "no official 2024 recount by island group could be confirmed" — this was itself mistaken. Because the three island groups partition the 18 regions exactly (Luzon 8 + Visayas 4 + Mindanao 6 = 18, per §3 of this article), summing the 2024 regional populations in §9-2 yields the 2024 island-group figures. In fact, the "Visayas Islands" article already adopted "approx. 21.03 million (2024)" in its §1, and this article alone had been left with 2020 figures. Sources (replaced in the 2026-08-26 source-hygiene pass): the 2024 regional population figures summed in §9-2 of this article = an in-article calculation. The regional breakdown is cross-checked against citypopulation.de (sourced from the PSA). 注The PSA's own published island-group figures are unreachable to a primary source (as of 2026-08-26), as psa.gov.ph returns an access refusal.) 注The sum of the three island groups, 112,719,355, is off by about 10,000 from the confirmed national total of 112,729,484. This gap arises because small islands (such as those of Romblon and Masbate) are not always assigned to island groups the same way as regional boundaries — do not use "the sum of the island groups" as a stand-in for the national population. 注The first draft's comparison of growth rates — "Mindanao at 1.79% versus Luzon at 1.68%" — reflects the 2015→2020 period; now that the national rate has slowed to 0.80% for 2020→2024, it should not be used as-is. The 2020→2024 growth rates were Luzon +3.38% / Mindanao +4.31% / Visayas +2.19%, and 注the phrase "the population's center of gravity is shifting south" is skewed even within Mindanao toward BARMM (3.43% annually) (per §3 of the "Mindanao Region" article) — this should not be described using crude island-group-level comparisons.

18. Common Points of Confusion — a Summary

日本語の詳細版: 分野「地方・地域とバンサモロ」「地理と行政区画」（本サイト日本語版）。