Chauddagram, Tripura (India), Parshuram and Chhagalnaiya upazilas on the north, Sonagazi and Mirsharai upazilas on the south, Chhagalnaiya upazila on the east, Daganbhuiyan upazila on the west.

Feni thana was established in 1929. It was turned into an upazila in 1984. The upazila consists of one municipality, 18 wards, 16 union parishads, 143 mouzas and 133 villages.

Feni Sadar Upazila is located in Feni District. Upazilla(s)/Thana(s) in Feni are Chhagalnaiya Upazila, Daganbhuiyan Upazila, Feni Sadar Upazila, Parshuram Upazila, Phulgazi Upazila, Sonagazi Upazila.

Residence and mosque of Mohammad Ali Chowdhury at Sharshodi, Rajajhi Dighi (1830), Bijoy Shingho Dighi (Mohipal, 1760).