Kasibu

Kasibu, officially the Municipality of Kasibu, is a local government municipality in Nueva Vizcaya province in the Cagayan Valley region of the Philippines. It is located approximately 46.45 kilometres from Bayombong, the provincial capital, and about 302.37 kilometres from Manila. The municipality is divided into 30 barangays, which are the country's basic local government units below the municipal level. Its population was reported at 46,845 in the 2024 census. The name Kasibu is derived from an Ilongot word meaning a place or venue where people settle disagreements. This interpretation reflects the municipality's historical association with Indigenous communities, local mediation, and the settlement of communities in an area that once lacked a fully established municipal administration. Gaddang, Ilocano, and Tagalog forms of the municipal name are also used in local and national contexts. Kasibu's institutional history developed gradually. Before the creation of a separate municipal district, the area had a school and a constabulary detachment serving the Ilongots. These facilities helped prompt the provincial government to seek a formal administrative structure. Executive Order No. 59, signed by Governor-General Leonard Wood on January 1, 1926, established Kasibu as part of the Municipal District of Bambang. In 1933, a proclamation by Governor Leon Cabarroguis reorganized Kasibu as a separate municipal district. The district was later abolished under Executive Order No. 368, signed by President Elpidio Quirino on November 9, 1950, and its territory was returned to Bambang. The change was associated with very low population and the evacuation of residents during a period of unrest from 1950 to 1955. After peace and order conditions improved, President Ramon Magsaysay issued Executive Order No. 160 on January 9, 1956, creating Kasibu as a separate municipality. The re-established municipality did not retain all of the territory previously associated with Kasibu: the barrios of Payupay, Belance, Oyao, Teguep, Manacgoc, Pangancan, and Munguia were placed under Dupax del Norte. Kasibu has a predominantly rural administrative and economic profile. Agriculture, local commerce, public services, education, and resource-related activity are important parts of its municipal economy. The municipality is also host to the Didipio mine, a major gold and copper operation managed by OceanaGold. The mine produces gold and silver doré bars and copper concentrate, and its concession area extends across parts of Nueva Vizcaya and Quirino. Mining has made Kasibu relevant to discussions about local employment, public revenue, environmental management, Indigenous communities, and resource governance, although the municipality itself remains a local-government entity rather than a commercial brand. Public education is administered through the Schools Division of Nueva Vizcaya, with local administration divided between the Kasibu East and Kasibu West district offices. The municipality has elementary and secondary institutions, including Eastern Nueva Vizcaya National High School, Kasibu National Agricultural School, Kongkong Valley National High School, Kakiduguen National High School, and Malabing Valley National High School-Integrated Senior High School. Local government is organized under the Philippine Local Government Code. A directly elected mayor serves as chief executive, while a vice mayor and municipal councilors form the elected municipal legislative and oversight structure. Elections are held every three years.

Kasibu's early administrative development was connected to the presence of an Ilongot-serving school and a constabulary detachment. These institutions indicated a need for a more formal government presence in an area that had previously been administered through broader provincial structures. During the tenure of Nueva Vizcaya Governor Alfonso Castañeda, the provincial board requested authorization to establish a provisional municipal district that could be supervised through the provincial government. On January 1, 1926, Governor-General Leonard Wood signed Executive Order No. 59, placing Kasibu within the Municipal District of Bambang. The arrangement provided an initial administrative framework but did not make Kasibu a fully separate municipality. In 1933, Governor Leon Cabarroguis issued a proclamation reorganizing Kasibu as an independent municipal district. The separate district structure did not remain in place continuously. Executive Order No. 368, signed by President Elpidio Quirino on November 9, 1950, abolished the municipal district system and reattached Kasibu to Bambang. The decision was associated with the area's small population. In addition, residents had begun leaving the area amid the presence of dissidents and related insecurity between 1950 and 1955. This period interrupted local settlement and administration. Following the restoration of peace and order, President Ramon Magsaysay signed Executive Order No. 160 on January 9, 1956, creating Kasibu as a separate municipality. The new municipality had reduced territorial coverage compared with earlier arrangements. Payupay, Belance, Oyao, Teguep, Manacgoc, Pangancan, and Munguia were transferred to Dupax del Norte. In the contemporary period, Kasibu is a municipality of Nueva Vizcaya with 30 barangays and a population of 46,845 according to the 2024 census. It is governed by an elected mayor, vice mayor, and municipal council under the Philippine Local Government Code. Its administrative responsibilities include local public services, infrastructure, community governance, and coordination with provincial and national agencies. The municipality's economy includes agriculture and rural commerce, but Kasibu is particularly notable for hosting the Didipio mine. The operation, managed by OceanaGold, produces gold and silver in doré form and copper concentrate. The mine's claim area extends across approximately 27,000 hectares in Nueva Vizcaya and neighboring Quirino. Its presence has added an industrial and resource-governance dimension to Kasibu's otherwise rural municipal profile. Education is delivered through the Nueva Vizcaya Schools Division and two local district offices, Kasibu East and Kasibu West. The municipal school network includes agricultural, general secondary, integrated senior-high-school, elementary, and community-based institutions. Kasibu's name is associated with an Ilongot term describing a place where people settle differences, an etymology that remains part of the municipality's cultural and historical identity.

• 2024

  Population recorded at 46,845

  [1]Kasibuen.wikipedia.org

  The 2024 census reported a population of 46,845 for Kasibu.

• 1956

  Kasibu re-established as a municipality

  [1]Kasibuen.wikipedia.org

  President Ramon Magsaysay issued Executive Order No. 160 on January 9, 1956, creating Kasibu as a separate municipality after peace and order conditions had improved.

• 1950

  Municipal district structure abolished

  [1]Kasibuen.wikipedia.org

  Executive Order No. 368, signed by President Elpidio Quirino on November 9, 1950, abolished the municipal district structure and returned Kasibu to Bambang.

• 1933

  Kasibu reorganized as a separate municipal district

  [1]Kasibuen.wikipedia.org

  A proclamation issued by Nueva Vizcaya Governor Leon Cabarroguis reorganized Kasibu as a separate municipal district.

• 1926

  Kasibu placed within the Municipal District of Bambang

  [1]Kasibuen.wikipedia.org

  Executive Order No. 59, signed by Governor-General Leonard Wood on January 1, 1926, established Kasibu as part of the Municipal District of Bambang.

A rural Philippine municipality combining local government administration, agricultural and community services, education, and a significant resource-extraction presence through the Didipio mining operation.

1. 1Kasibuen.wikipedia.org