Keraniganj upazila on the north, Lohajang and Sreenagar upazilas on the south, Tongibari and Narayanganj Sadar upazila on the east, Sreenagar and Nawabganj (Dhaka) upazilas on the west.

Sirajdikhan thana was constituted in 1914 and was transformed into an upazila in 1983. It consists of 14 union parishads, 124 mouzas and 177 villages.

Serajdikhan Upazila is located in Munshiganj District. Upazilla(s)/Thana(s) in Munshiganj are Gazaria Upazila, Lohajang Upazila, Munshiganj Sadar Upazila, Serajdikhan Upazila, Sreenagar Upazila, Tongibari Upazila.

A single domed mosque at Kusumpur (Talukdar-bari Mosque, Mughal period), Tajpur Mosque, Patharghata Mosque, Qazishal Mosque, Pulghata Bridge, math at village Fegnasar, math at the house of Kankata De at village Tajpur and Panchasikhar Mahadeva Mandir (temple) at Taltala. A large shiva-linga (phallus of god Shiva) is placed inside this temple.