Dhamoirhat and Joypurhat Sadar upazilas on the north, Naogaon Sadar upazila on the south, Akkelpur on the east, Mahadevpur and PatniTala upazilas on the west.

Badalgachi thana was established in 1807 and was turned into an upazila in 1983. It consists of eight union parisads, 247 mouzas, 235 villages.

Badalgachhi Upazila is located in Naogaon District. Upazilla(s)/Thana(s) in Naogaon are Atrai Upazila, Badalgachhi Upazila, Dhamoirhat Upazila, Mahadevpur Upazila, Manda Upazila, Naogaon Sadar Upazila, Niamatpur Upazila, Patnitala Upazila, Porsha Upazila, Raninagar Upazila, Sapahar Upazila.

Buddhist Vihara at Paharpur, Tara Temple and Halud Vihara.