Muradnagar upazilas on the north, Chandina upazila on the south, Burichang and Brahmanpara upazilas on the east, Muradnagar upazila on the west.

Debidwar thana was established in 1915 and was turned into an upazila in 1980. The upazila consists of 16 union parishads, 141 mouzas, 201 villages.

Debidwar Upazila is located in Comilla District. Upazilla(s)/Thana(s) in Comilla are Barura Upazila, Brahmanpara Upazila, Burichang Upazila, Chandina Upazila, Chauddagram Upazila, Comilla Sadar Upazila, Daudkandi Upazila, Debidwar Upazila, Homna Upazila, Laksham Upazila, Muradnagar Upazila, Nangalkot Upazila.