Rajnagar is a village in Namkhana 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 Rajnagar was 5,055 which includes 2,613 males and 2,442 females. Rajnagar covers 596.06 ha area. Pincode of Rajnagar is 743357.