As per orders of the Delimitation Commission, No. 274 Galsi (SC) assembly constituency covers Galsi I community development block, Galsi and Kurkuba gram panchayats of Galsi II CD Block and Kanksa, Trilokchandrapur, Bankati and Bidbehar gram panchayats of Kanksa CD Block.
Galsi assembly segment was earlier part of Durgapur (Lok Sabha constituency).