Islampur is the most sparsely populated upazila of the Jamalpur District, located in the Mymensingh Division of Bangladesh. Islampur is located at 25°05′00″N 89°47′30″E / 25.0833°N 89.7917°E. It lies between the Brahmaputra and Jamuna rivers. Islampur has 74,963 households and total area 353.31 km².