Kotagaralahalli is a village in Madhugiri tehsil in district of Tumkur, Karnataka, India. As per the data provided by Census of India in 2011, total population of Kotagaralahalli was 3,933 which includes 1,969 males and 1,964 females. Kotagaralahalli covers 1747.74 ha area. Pincode of Kotagaralahalli is 572132.