Gaddamsonnahalli is a village in Malur tehsil in district of Kolar, Karnataka, India. As per the data provided by Census of India in 2011, total population of Gaddamsonnahalli was 13 which includes 6 males and 7 females. Gaddamsonnahalli covers 65.25 ha area. Pincode of Gaddamsonnahalli is 563130.