Composed of sixteen cities and one municipality. The cities are Caloocan, Las Piñas, Makati, Malabon, Mandaluyong, Manila, Marikina, Muntinlupa, Navotas, Parañaque, Pasay, Pasig, Quezon City, San Juan, Taguig, and Valenzuela. The only municipality is Pateros.

Composed of six provinces: Abra, Apayao, Benguet, Ifugao, Kalinga, and Mountain Province. It has two cities: Baguio and Tabuk.

Composed of four provinces: Ilocos Norte, Ilocos Sur, La Union, and Pangasinan. It has nine cities: Alaminos, Batac, Candon, Dagupan, Laoag, San Carlos, San Fernando, Urdaneta, and Vigan.

Composed of five provinces: Batanes, Cagayan, Isabela, Nueva Vizcaya, and Quirino. It has four cities: Tuguegarao City (the regional center) in Cagayan, Ilagan City and Cauayan City in Isabela, and Santiago City, which is an independent component city geographically located within Isabela.

Composed of seven provinces: Aurora, Bataan, Bulacan, Nueva Ecija, Pampanga, Tarlac, and Zambales. It has thirteen cities: Balanga, Cabanatuan, Gapan, Muñoz, Palayan, San Jose, Angeles, Mabalacat, San Fernando, Olongapo, Malolos, Meycauayan, and San Jose del Monte.

Composed of five provinces: Cavite, Laguna, Batangas, Rizal, and Quezon. It has thirteen cities: Antipolo, Bacoor, Calamba, Cavite City, Dasmariñas, General Trias, Imus, Lipa, Lucena, San Pablo, Santa Rosa, Tagaytay, and Tanauan.

Composed of five provinces: Marinduque, Occidental Mindoro, Oriental Mindoro, Palawan, and Romblon. It has two cities: Calapan and Puerto Princesa.

Composed of six provinces: Albay, Camarines Norte, Camarines Sur, Catanduanes, Masbate, and Sorsogon. It has seven cities: Legazpi, Ligao, Tabaco, Naga, Iriga, Masbate City, and Sorsogon City.

Composed of six provinces: Aklan, Antique, Capiz, Guimaras, Iloilo, and Negros Occidental. It has sixteen cities: Bacolod, Bago, Cadiz, Escalante, Himamaylan, Kabankalan, La Carlota, San Carlos, Silay, Sipalay, Talisay, Victorias, Iloilo City, Passi, Roxas, and Sagay.

Composed of four provinces: Bohol, Cebu, Negros Oriental, and Siquijor. It has thirteen cities: Bais, Bayawan, Canlaon, Cebu City, Danao, Dumaguete, Lapu-Lapu, Mandaue, Tagbilaran, Talisay, Toledo, Tanjay, and Naga.

Composed of six provinces: Biliran, Eastern Samar, Leyte, Northern Samar, Samar, and Southern Leyte. It has seven cities: Baybay, Borongan, Calbayog, Catbalogan, Maasin, Ormoc, and Tacloban.

Composed of three provinces: Zamboanga del Norte, Zamboanga del Sur, and Zamboanga Sibugay. It has five cities: Dapitan, Dipolog, Pagadian, Zamboanga City, and Isabela City.

Composed of five provinces: Bukidnon, Camiguin, Lanao del Norte, Misamis Occidental, and Misamis Oriental. It has nine cities: Cagayan de Oro, El Salvador, Gingoog, Iligan, Malaybalay, Oroquieta, Ozamiz, Tangub, and Valencia.

Composed of five provinces: Davao de Oro, Davao del Norte, Davao del Sur, Davao Occidental, and Davao Oriental. It has six cities: Davao City, Digos, Island Garden City of Samal, Mati, Panabo, and Tagum.

Composed of four provinces: Cotabato, Sarangani, South Cotabato, and Sultan Kudarat. It has five cities: General Santos, Koronadal, Kidapawan, Tacurong, and Cotabato City.

Composed of five provinces: Agusan del Norte, Agusan del Sur, Dinagat Islands, Surigao del Norte, and Surigao del Sur. It has six cities: Bayugan, Bislig, Butuan, Cabadbaran, Surigao City, and Tandag.

Composed of five provinces: Basilan, Lanao del Sur, Maguindanao del Norte, Maguindanao del Sur, and Sulu, Tawi-Tawi. It has three cities: Cotabato City, Lamitan, and Marawi.