Dolores, officially the Municipality of Dolores, is a municipality in the province of Abra, Philippines. According to the 2020 census, it has a …Dolores, officially the Municipality of Dolores, is a municipality in the province of Abra, Philippines. According to the 2020 census, it has a population of 11,512 people. Formerly named as Bucao but in 1885, it was renamed Dolores in honor of the town's patron saint Dolores.