Somanathanahalli is a village in Channarayapatna tehsil in district of Hassan, Karnataka, India. As per the data provided by Census of India in 2011, total population of Somanathanahalli was 820 which includes 404 males and 416 females. Somanathanahalli covers 295.08 ha area. Pincode of Somanathanahalli is 573116.