|Region||Cagayan Valley (Region 2)||Barangay||6|
|Province||Nueva Vizcaya||Land Area||52,275.03 hectares|
|District||Lone District||Total Population||7,428 (NSO, 2010)|
|Classification||4th class||Industries||Rice Mills, Furniture carving|
|Time Zone||PST (UTC+8)||Resources||Agriculture, livestock|
|Zip Code||3714||Products||Rice, Soft Brooms|
|Fiesta||Black Nazarene Patronal Fiesta January 9|
Long before the opening of the irregular municipal district of Kasibu, there was a school and a constabulary detachment for the Ilongots (now officially called Bukalots). There were many semi-wild Ilongots roaming in the region which necessitated the establishment of a kind of government to administer the place. For this reason, the provincial board during Governor Catańeda’s time requested the Governor-general to authorize the establishment of this place as an irregular municipal district to be supervised and administered by the provincial governor. So, in 1925, the Governor-General issued an Executive Order for the organization of this place to be known as the municipal district of Kasibu.
Alfonso Castañeda is politically subdivided into 6 barangays.