Sonnappanahalli is a village in Bangalore North tehsil in district of Bangalore, Karnataka, India. As per the data provided by Census of India in 2011, total population of Sonnappanahalli was 3,932 which includes 2,080 males and 1,852 females. Sonnappanahalli covers 128.04 ha area. Pincode of Sonnappanahalli is 562157.