Poonathanahalli is a village in Palakkodu tehsil in district of Dharmapuri, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Poonathanahalli was 1,352 which includes 719 males and 633 females. Poonathanahalli covers 150.19 ha area. Pincode of Poonathanahalli is 635205.