Long before the opening of the municipal district of Kasibu, there was a school and a constabulary detachment for the Ilongots, which necessitated the establishment of a government in the area.

59, signed on January 1, 1926, by Governor General Leonard Wood, Kasibu was established as part of the Municipal District of Bambang.

368,[5] signed by President Elpidio Quirino, abolished the municipal district structure in government and reattached Kasibu to Bambang.

160[6] creating Kasibu as a separate municipality, but losing territorial jurisdiction over some of its barrios specifically Payupay, Belance, Oyao, Teguep, Manacgoc, Pangancan and Munguia, all on the eastern side in favor of Dupax del Norte.

[13] Poverty incidence of Kasibu Source: Philippine Statistics Authority[14][15][16][17][18][19][20][21] Kasibu, belonging to the lone congressional district of the province of Nueva Vizcaya, is governed by a mayor designated as its local chief executive and by a municipal council as its legislative body in accordance with the Local Government Code.