In July 6, 1969, majority of the registered voters of sitios Ansagan, Lubas, Pimmingan, Lelit and Baracbac, Saped, Basig, Panachackan, Guinabang, Ceresa, Cobicob, Lemingaling, Siminbaan, Lumanday, Lipit, Lubang, Decoran and Lupitac, all of barrio Camp One, Tuba, Benguet, filed a petition that these sitios be organized and to compose an independent political subdivision to be called the Barrio of Ansagan. It was favorably recommended by the Municipal Council of Tuba, Benguet Province through Resolution No. 90 dated October 8, 1969 and duly approved by the Provincial Board.
Barangay Ansagan is located at the Southern tip of this municipality. It is bounded on the North by Barangay Camp One, on the east by municipality of Itogon, on the west by the municipality of Sison Pangasinan, and on the south by the municipality of San Manuel, Pangasinan. It is characterized by rolling hills and mountains with an approximate area of 6,263.65 hectares. Barangay Ansagan has an approximate population of 2,083 and 434 households as of 2010. It can be reached by Jeepney via Kennon Road, through Binalonan, Pangasinan up to Ansagan Proper, through Sison, Pangasinan all the way to Northern Cement Corporation up to sitios Saguitlang and Lubas, and via Philex Road through Barangay Camp One (Ligay) up to sitio Pimminggan and Ansagan Proper.
This Barangay is blessed with natural resources like springs, creeks, forest and valleys at Lubas, Labney, Pimminggan and Ansagan Proper while plains at sitio Cobicob and Caves at Simimbaan, Ubong-ubong and Baracbac. The main source of livelihood in the area is farming. While the area is potential for cattle raising, it is also potential for adventure tourism with the presence of various caves.