Girinathanahalli is a village in Sira tehsil in district of Tumkur, Karnataka, India. As per the data provided by Census of India in 2011, total population of Girinathanahalli was 820 which includes 428 males and 392 females. Girinathanahalli covers 305.99 ha area. Pincode of Girinathanahalli is 572137.