1. Luzon (/luːˈzɑːn/) is the largest island in thePhilippines. It is located in the northernmostregion of the archipelago, and is also the name ofone of the three primary island groups in thecountry centered on the island (the other twobeing the Visayas and Mindanao). Luzon as anisland group includes Luzon proper, the Batanesand Babuyan groups of islands to the north, andthe outlying islands ofCatanduanes, Marinduque, Masbate, Romblon, andMindoro. Luzon is the economic and politicalcenter of the Philippines, being home to thecountrys capital city, Manila.
2. Administrative divisionsThe island of Luzon contains 8 of the 17administrative regions of the Philippines. Theseregions are not political entities, but merely serve asadministrative groupings of provinces. They are: Ilocos Region (Region I), Cagayan Valley (Region II) Central Luzon (Region III) CALABARZON (Region IV-A) MIMAROPA (Region IV-B) Bicol Region (Region V) Cordillera Administrative Region (CAR) National Capital Region (NCR)
3. Ilocos Region (Region I) is on the northwest side of the islandand faces South China Sea. The region is well known for itswhite sand coastline and rich history. Its provinces are IlocosNorte, Ilocos Sur, La Union, and Pangasinan. The regionsadministrative centers is San Fernando City, La Union.Cagayan Valley (Region II) is located in the northeast portion ofthe main island and also covers the Batanes and BabuyanIslands to the north. The valley is surrounded by theCordillera Central and Sierra Madre mountain ranges.Running through its center is the countrys longestriver, Cagayan River. Its provinces areBatanes, Cagayan, Isabela, Nueva Vizcaya, and Quirino. Theregions administrative centers is Tuguegarao City.
4. MIMAROPA (Region IV-B), along with CALABARZON is thenewest region of the country, and was previously a part ofSouthern Tagalog (Region IV). It contains most of the islandsin the Luzon group. The name of the region is actually anacronym that stands for its provinces, which areMarinduque, Occidental Mindoro, OrientalMindoro, Palawan and Romblon. The regions administrativecenter is Calapan City.Bicol Region (Region V) occupies the Bicol Peninsula at thesoutheastern end of Luzon island, plus the outlying islandswhich include the island provinces of Catanduanes andMasbate. The remaining mainland provinces areAlbay, Camarines Norte, Camarines Sur, and Sorsogon. Theregions administrative center is Legazpi City. The inhabitants
5. Cordillera Administrative Region (CAR) almost completelycovers the Cordillera Central mountain range of NorthernLuzon. CAR, created in 1989 is a special administrativeregion for the indigenous tribes of these mountains. Itsprovinces are Abra, Apayao, Benguet, Ifugao, Kalinga, andMountain Province. The regional center is Baguio City.National Capital Region (NCR) is a special administrativeregion that contains the capital of the country, Manila; thecountrys most populous city, Quezon City; and anadditional 15 more cities and municipalities. The region ismore popularly known as Metro Manila. It is the onlyregion in the country that has no provinces, and is the mostdensely populated with over 10 million people living in a636 km² area.
6. Central Luzon (Region III) contains the largest plain of the countryand produces most of the countrys rice supply. Its provinces areAurora, Bataan, Bulacan, Nueva Ecija, Pampanga, Tarlac, andZambales. The regions administrative center is the City of SanFernando, Pampanga. The former United States Navy base ofSubic Bay is located in Subic, Zambales while the former UnitedStates Air Force is in Clark Field, Pampanga. Both are now two ofthe countrys booming special economic zones. The mainlanguages are Kapampangan and Tagalog.CALABARZON (Region IV-A), one of the newest regions of thecountry, was previously a part of Southern Tagalog (Region IV). Itis one of the most populous areas of the country. The name of theregion is actually an acronym that stands for its provinces, whichare Cavite, Laguna, Batangas, Rizal, and Quezon. The Tagalogsare the dominant ethnic group in this region, with Tagalog as themain language. Its recognized administrative center is Manila,which is in Metro Manila, however, some government officials stillconsider Quezon City, which is also in Metro Manila as theadministrative center, and also, Lucena City. The regionsadministrative center is Calamba City.