Chhatak and Sunamganj Sadar upazilas on the north, Nabiganj upazila on the south, Bishwanath and Balaganj upazilas on the east, Derai upazila on the west.

Jagannathpur thana was turned into an upazila in 1983. It consists of one municipality, 9 union parishads, 263 mouzas and 331 villages.

Jagannathpur Upazila is located in Sunamganj District. Upazilla(s)/Thana(s) in Sunamganj are Bishwamvarpur Upazila, Chhatak Upazila, Derai Upazila, Dharmapasha Upazila, Dowarabazar Upazila, Jagannathpur Upazila, Jamalganj Upazila, Sullah Upazila, Sunamganj Sadar Upazila, Tahirpur Upazila.