The City of Bislig is located between the latitude 8 degree 03 minutes and 30 seconds to 8 degree 18 minutes and 0 seconds north and longitude 126 degree 11 minutes and 0 seconds to 126 degree 27 minutes and 0 seconds east lying along the southeastern coast of Mindanao Island directly facing the Pacific Ocean. It falls under Region XIII (Caraga Region), and is the 3rd class city in the province of Surigao del Sur. It is bounded on the north by the Municipality of Hinatuan, on the northwest by the Municipality of Tagbina, on the southeast by the Municipality of Lingig, and on the southwest by the Province of Agusan del Sur and on the northeast by the Pacific Ocean. Bislig is approximately 208 kilometers northeast of Davao City, 152 kilometers south of Tandag City (the provincial capital) and 158 southeast of Butuan City.
Bislig City is located at the Southeastern coast of Mindanao facing Pacific Ocean. 158 kms. South of Butuan (Caraga Regional Center), 152 kms. South of Tandag (Surigao del Sur Provincial Capital) and 208 kms. Northeast of Davao City. It is composed of 24 barangays, five of these are urban barangays comprising Mangagoy, Tabon, Cumawas, Poblacion and Maharlika, and the rest are rural barangays. Also, eleven of the total barangays are coastal barangays facing Bislig Bay and Pacific Ocean.
The total land area of Bislig City is 40,503 hectares of which 14,913 hectares or 36.82% are classified as alienable and disposable land and 25,590 hectares or 63.18% as forestland. Constituting the water bodies is 525 hectares or 1.16% of the whole area. Of its barangays, San Roque has the largest area which is 12.90% of the total land area of the city. Barangay San Jose and Burboanan come next with 9.7% and 8.33% of the total land area respectively
The topography of Bislig City is characterized by extensive mountain ranges which are mostly forestal. The major mountain ranges with elevation of 100 meters and higher are found in the boundary of Labisma, Tabon, San Antonio, Sta. Cruz, Coleto, San Roque and Burboanan. About 42.13% of the municipal land area consists of highlands, and the rest, lowlands.
The major mountain ranges with elevation of 100 meters and higher are found in the boundary of Barangays Labisma, Tabon, San Antonio, Sta. Cruz, Coleto, San Roque and Burboanan. About 42.13 percent of our city land area consists of highlands; and the rest, lowlands.
The climate of the City of Bislig falls under the second type which is characterized by no dry season and with a very pronounced maximum rainfall from November to January and falls below seven percent (7%) less frequent under the frequency cyclone characteristic since it is located below the typhoon belt.