Regions of the Philippines

June 22, 1973 – is transferred from Region III (Central Luzon) to Region I (Ilocos Region).^[2]

Pangasinan

July 7, 1975 – Region XII is created, and some regions of are reorganized.^[3]

Mindanao

July 25, 1975 – Regions IX and XII are declared as Autonomous Regions in Western and Central Mindanao, respectively.

[4]

August 21, 1975 – Region IX is divided into Sub-Region IX-A and Sub-Region IX-B. Some regions in Mindanao are reorganized.

[5]

November 7, 1975 – is created.^[6]

Metro Manila

January 23, 1976 – Metro Manila is separated from to become Region IV; Southern Tagalog becomes Region IV-A.^[7]

Southern Tagalog

June 2, 1978 – Metro Manila is declared the National Capital Region.

[8]

June 11, 1978 – The regional center of Region IX is transferred from to Zamboanga City.^[9]

Jolo, Sulu

July 15, 1987 – The is created.^[10]

Cordillera Administrative Region

August 1, 1989 – The (ARMM) is created.^[11] Region XII reverted to an administrative region.

Autonomous Region in Muslim Mindanao

January 30, 1990 – Residents reject in the ratification to create the Cordillera Autonomous Region.^[12]

a plebiscite

October 12, 1990 – Reorganization and/or renaming of the Mindanao regions: Region IX (Western Mindanao), Region X (), Region XI (Southern Mindanao), Region XII (Central Mindanao), and ARMM. Regional center of Region IX is transferred to Pagadian, with Zamboanga City remaining as the region's commercial and industrial center.^[13]

Northern Mindanao

February 23, 1995 – Region XIII () is created and minor reorganization of some Mindanao regions; Sultan Kudarat is transferred to Region XII.^[14]

Caraga

March 7, 1998 – Residents reject in for the second time the ratification to create the Cordillera Autonomous Region.^[15]

a plebiscite

December 18, 1998 – Sultan Kudarat is reverted to Region XII.

[16]

March 31, 2001 – The ARMM is expanded.

[17]

September 19, 2001 – Most Mindanao regions are reorganized and some are renamed, such as Region IX (), Region XI (Davao Region), and Region XII (Soccsksargen).^[18]

Zamboanga Peninsula

May 17, 2002 – Region IV-A () and Region IV-B (Mimaropa) are created from the former Region IV (Southern Tagalog) region; Aurora is transferred to Region III.^[19]

Calabarzon

October 28, 2003 – is designated as the regional center of Region IV-A.^[20]

Calamba, Laguna

March 30, 2004 – is designated as the regional center of Region XII.^[21]

Koronadal

May 23, 2005 – is transferred from Region IV-B to Region VI (Western Visayas).^[22]

Palawan

August 19, 2005 – The transfer of Palawan to Region VI is held in abeyance.

[23]

November 22, 2007 – is designated as the regional center of Region IV-B.^[24]

Calapan

May 29, 2015 – The (NIR) is created. Negros Occidental and Bacolod are transferred from Region VI, and Negros Oriental is removed from Region VII (Central Visayas).^[25]

Negros Island Region

July 17, 2016 – The Southwestern Tagalog Region (Mimaropa Region) is established comprising the former Region IV-B (in effect merely a renaming and discontinuation of the "Region IV-B" designation since no boundary changes were involved).

[26]

August 9, 2017 – NIR abolished. Negros Occidental (including Bacolod) and Negros Oriental reverted to Regions VI and VII, respectively.

[27]

January 25, 2019 – The is created, replacing the ARMM after the ratification of the Bangsamoro Organic Law.^[28][29][30]

Bangsamoro Autonomous Region in Muslim Mindanao

June 13, 2024 - NIR re-established, with transferred from Region VII.^[31]

Siquijor

Component local government units: the data column is limited to , which pertains to component provinces, highly urbanized cities, and independent component cities, as well as the independent municipality of Pateros. All city names, except those under the National Capital Region, are italicized.

primary LGUs

Location: the location map column can be sorted from north-to-south, west-to-east.

Cordillera Autonomous Region (proposal to convert the Cordillera Administrative Region into an autonomous region; see Cordillera autonomy movement)

[43]

Samar Administrative Region

[44]

Bangsa Sug^[46][47] (proposed to separate the Sulu Archipelago from the mainland portion of Bangsamoro)

[45]

(Region IV, now divided into Calabarzon, Central Luzon (Aurora), Metro Manila (several cities that were part of Rizal), and Mimaropa; the name remains as a cultural-geographic region only)

Southern Tagalog

Western Mindanao (renamed as , still designated as Region IX)

Zamboanga Peninsula

Central Mindanao (now mostly , still designated as Region XII)

Soccsksargen

Southern Mindanao (now mostly , still designated as Region XI)

Davao Region

(replaced by Bangsamoro)

Autonomous Region in Muslim Mindanao

List of regions of the Philippines by GDP

Super regions of the Philippines

Federalism in the Philippines

ISO 3166-2:PH

National Statistical Coordination Board

Philippine Statistics Authority