Barhatta and Dharmapasha upazilas on the north, Atpara, Madan and Khaliajuri upazilas on the south, Jamalganj and Khaliajuri upazilas on the east, Atpara upazila on the west.

Mohanganj thana was turned into an upazila in 1982. The upazila consists of 1 municipality, 10 union parishads, 142 mouzas and 163 villages.

Mohanganj Upazila is located in Netrokona District. Upazilla(s)/Thana(s) in Netrokona are Atpara Upazila, Barhatta Upazila, Durgapur Upazila, Kalmakanda Upazila, Kendua Upazila, Khaliajuri Upazila, Madan Upazila, Mohanganj Upazila, Netrokona Sadar Upazila, Purbadhala Upazila.

Ancient fort at village Betham (Sultan Alauddin Hussain Shah period), Shekher Bari Mosque (same period), Daulatpur Temple (876 BS).