Kalagachhi is a village in Diamond Harbour II tehsil in district of South Twenty Four Parganas, West Bengal, India. As per the data provided by Census of India in 2011, total population of Kalagachhi was 2,749 which includes 1,387 males and 1,362 females. Kalagachhi covers 61.08 ha area. Pincode of Kalagachhi is 743368.