Tubo, officially the Municipality of Tubo, is a 4th class municipality in the province of Abra, Philippines. According to the 2020 census, it has a …Tubo, officially the Municipality of Tubo, is a 4th class municipality in the province of Abra, Philippines. According to the 2020 census, it has a population of 5,674 people. The municipality was created on June 17, 1967, from the former municipal district of the same name, through Republic Act 5161.