Ajjanahalli is a village in Pennagaram tehsil in district of Dharmapuri, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Ajjanahalli was 10,481 which includes 5,774 males and 4,707 females. Ajjanahalli covers 4000.81 ha area. Pincode of Ajjanahalli is 636810.