Dinapigue, officially the Municipality of Dinapigue, is a municipality in the province of Isabela, Philippines. According to the 2020 census, it ha…Dinapigue, officially the Municipality of Dinapigue, is a municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 5,821 people. Dinapigue used to be a barrio of San Mariano, Isabela. On June 21, 1969, Republic Act No. 5776 declared Dinapigue to be a separate municipality.