the jurisdiction of a province, except for Pateros, which is self-governing. A city or municipality is divided into barangays, over which it exercises supervisory authority. A city or municipality is headed by a mayor. The Sangguniang Panlungsod is the legislative body for cities and Sangguniang Bayan for municipalities. Barangays The barangay is the smallest local government unit in the Philippines. Although "barangay" is sometimes translated into English as "village," a barangay can be: an urban neighborhood, such as a city block or a gated community (e.g., Forbes Park, Makati); a sizable urban district (e.g., Payatas, Quezon City); a single hamlet or village (e.g., Pag-asa, Kalayaan, Palawan); a small town (e.g., Mangagoy, Bislig, Surigao del Sur); or a rural district composed of disperse settlements (e.g., Nagacadan, Kiangan, Ifugao). Each barangay is headed by a Barangay Captain. Its local legislative body is the Sangguniang Barangay. Other divisions Island groups The Philippines is broadly divided into three traditional island groups: Luzon, the Visayas, and Mindanao. The Philippine flag's three stars are often taken to represent each of these geographical groupings. These island groups, however, have no specific administrative bodies, either elected or appointed, although many agencies and institutions, both government and private, use island groupings for certain purposes. For example, the Palarong Pambansa rotates yearly hosting duties among the island groups, while the League of Municipalities of the Philippines organizes its members and meetings by Luzon, Visayas and Mindanao "clusters." Local administrative districts Some LGUs use geographic divisions that are solely used for administrative purposes. Geographic districts and zones Certain cities officially organize their constituent barangays into geographic districts: Baguio: 20 (Districts 1–20) Calbayog: 3 (Calbayog, Oquendo, Tinambac) Davao City: 11 (Agdao, Baguio, Buhangin, Bunawan, Calinan, Marilog, Paquibato, Poblacion, Talomo, Toril, Tugbok) Iloilo City: 7 (Arevalo, City Proper, Jaro, La Paz, Lapuz, Mandurriao, Molo) Manila: 16 (Binondo, Ermita, Intramuros, Malate, Paco, Pandacan, Port Area, Quiapo, Sampaloc, San Andres, San Miguel, San Nicolas, Santa Ana, Santa Cruz, Santa Mesa, Tondo) Samal: 3 (Babak, Kaputian, Peñaplata) Sorsogon City: 2 (Bacon, Sorsogon) Zamboanga City: 13 (Ayala, Baliwasan, Curuan, Islands, Labuan, Manicahan, Mercedes, Putik, Santa Barbara, Santa Maria, Tetuan, Vitali, Zamboanga Central) Three cities also officially organize their barangays into numbered zones: Caloocan (Zones 1–16), Manila (Zones 1–100), and Pasay (Zones 1–20). The 100 zones in Manila serve as an administrative layer immediately below the geographic district level. Many barangay names contain the words "district" (170 barangays)