Rajnagar is a village in Raghunathganj I tehsil in district of Murshidabad, West Bengal, India. As per the data provided by Census of India in 2011, total population of Rajnagar was 4,586 which includes 2,399 males and 2,187 females. Rajnagar covers 198.87 ha area. Pincode of Rajnagar is 742175.