Singair Dhamrai and Manikganj Sadar upazilas on the north, Nawabganj (Dhaka) upazila on the south, Savar and Keraniganj upazilas on the east, Manikganj Sadar upazila on the west. Profile Singair thana was established in 1919 and was turned into an upazila in 1983. It consists of 11 union parishads, 140 mouzas and 236 villages.