Bislig, officially known as the City of Bislig is a 3rd class component city in the province of Surigao del Sur, Philippines. According to the 2020 census, it has a population of 99,290 people.
Barangay Mangagoy, the downtown area often dubbed by its residents as "the little city within the city", is the center of trade and industry of Bislig which has a population of 32,464 as of the 2015 estimate. It is the largest barangay in the city and the entire province of Surigao del Sur in terms of population. Since Barangay Poblacion is often referred by the locals simply as 'Bislig', Mangagoy on the other hand is often mistaken as a separate town though it is only just one out of the 24 barangays that comprises the entire City of Bislig.