Somanathapura is a village in Krishnarajpet tehsil in district of Mandya, Karnataka, India. As per the data provided by Census of India in 2011, total population of Somanathapura was 836 which includes 417 males and 419 females. Somanathapura covers 273.76 ha area. Pincode of Somanathapura is 571605.