Comilla Sadar upazila on the north, Feni Sadar and Daganbhuiyan upazilas on the south, Tripura State of India on the east, Nangalkot and Laksham upazilas on the west.

Chauddagram thana was turned into an upazila in 1983. The upazila consists of 14 union parishads, 418 mouzas and 402 villages.

Chauddagram 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.

Palace of Senbahadur and Kali Mandir at Chandiskara, Bardhan Mura, Jagannath Dighi (pond) and Suamar Dighi.