Mahatao, officially the Municipality of Mahatao, is a 6th class municipality in the province of Batanes, Philippines. According to the 2020 census…Mahatao, officially the Municipality of Mahatao, is a 6th class municipality in the province of Batanes, Philippines. According to the 2020 census, it has a population of 1,703 people. Mahatao is located at 20°25′N 121°57′E / 20.42°N 121.95°E.