Burichang upazila and Tripura state of India on the north, Laksham and Chauddagram upazilas on the south, Tripura State of India on the east, Barura upazila on the west.

Comilla thana was turned into an upazila in 1983. The upazila consists of one municipality, 18 wards, 19 union parishads, 452 mouzas and 458 villages.

Comilla Sadar 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.

dharmasagar, Mainamati Museum, Shahsuja Mosque, Birchandra Library, Town Hall and Rajrajeshwari Kalibari.