Mohammadnagar is a village in Dubrajpur tehsil in district of Birbhum, West Bengal, India. As per the data provided by Census of India in 2011, total population of Mohammadnagar was 30 which includes 17 males and 13 females. Mohammadnagar covers 46.43 ha area. Pincode of Mohammadnagar is 731104.