Rajanahalli is a village in Harihar tehsil in district of Davanagere, Karnataka, India. As per the data provided by Census of India in 2011, total population of Rajanahalli was 3,034 which includes 1,602 males and 1,432 females. Rajanahalli covers 717.29 ha area. Pincode of Rajanahalli is 577601.