Sonnappanahalli is a village in Dod Ballapur tehsil in district of Bangalore Rural, Karnataka, India. As per the data provided by Census of India in 2011, total population of Sonnappanahalli was 747 which includes 375 males and 372 females. Sonnappanahalli covers 215.29 ha area. Pincode of Sonnappanahalli is 561203.