Lacub is a 5th class municipality in the province of Abra. Lacub became a regular municipality in 1948.

According to the 2000 census, it has a population of 2,782 people in 509 households.

Lacub is politically subdivided into 6 barangays.

The inhabitants of the municipality of Lacub are predominantly Tinguians coming from three tribes, namely: Mabacas, Adasens, and the Binongans. The Binongans originated from Abualan, San Juan, Abra. The Mabacas came from Lubuagan, Kalinga. The Adasens were from Tineg, Abra and the Western part of Apayao.

Tourist Attractions include Bumorayoc Cave, Bumorayoc Water Falls, Assi Hot Spring, Sap-al Rolling Hills Mountains

Mineral Resources: gold, copper, silver, iron

The place climate is characterized by 2 distinct seasons. The dry season, which occurs from November to April, is marked by daily blue skies and clear starry nights and the wet season for the rest of the year with high rainfall intensities accompanied by storms and typhoons.