Located roughly 300 kilometers north of Port Blair by road, Diglipur is situated on the North Andaman Island. The geography is characterized by a mix of dense, evergreen tropical rainforests, extensive mangrove swamps, and a deeply indented coastline offering natural harbors.
A defining geographical feature of Diglipur is the Kalpong River, which is the only perennial river in the entire Andaman and Nicobar archipelago. The river flows through the forests and plays a crucial role in the region's ecology and infrastructure. Diglipur is also surrounded by several ecologically significant offshore islands, marine national parks, and protected forest reserves that harbor endemic species of flora and fauna.

