Viswanathapura is a village in Magadi tehsil in district of Ramanagara, Karnataka, India. As per the data provided by Census of India in 2011, total population of Viswanathapura was 337 which includes 166 males and 171 females. Viswanathapura covers 146.53 ha area. Pincode of Viswanathapura is 562120.