Mallarajapatna is a village in Arkalgud tehsil in district of Hassan, Karnataka, India. As per the data provided by Census of India in 2011, total population of Mallarajapatna was 563 which includes 283 males and 280 females. Mallarajapatna covers 57.42 ha area. Pincode of Mallarajapatna is 573131.