Austagram and Baniachangupazilas on the north, Nasirnagar upazila on the south, Habiganj Sadar, Madhabpur and Nasirnagar upazilas on the east, Austagram upazila on the west.

Lakhai thana, now an upazila, was established in 1922. It consists of 6 unions, 70 mouzas and 63 villages.

Lakhai Upazila is located in Habiganj District. Upazilla(s)/Thana(s) in Habiganj are Ajmiriganj Upazila, Baniachang Upazila, Bahubal Upazila, Chunarughat Upazila, Habiganj Sadar Upazila, Lakhai Upazila, Madhabpur Upazila, Nabiganj Upazila.