Kalia upazila on the north, Fakirhat and Chitalmari upazilas on the south, Chitalmari, Tungipara and Gopalganj Sadar upazilas on the east, Terokhada and Rupsa upazilas on the west.

Mollahat thana was established in 1967 and was turned into an upazila in 1983. It consists of 7 union parishads, 58 mouzas and 102 villages.

Mollahat Upazila is located in Bagerhat District. Upazilla(s)/Thana(s) in Bagerhat are Bagerhat Sadar Upazila, Chitalmari Upazila, Fakirhat Upazila, Kachua Upazila, Mollahat Upazila, Mongla Upazila, Morrelganj Upazila, Rampal Upazila, Sarankhola Upazila.

Single domed mosque at Kulia union.