Periathallapadi is a village in Uthangarai tehsil in district of Krishnagiri, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Periathallapadi was 4,094 which includes 2,020 males and 2,074 females. Periathallapadi covers 237.13 ha area. Pincode of Periathallapadi is 635307.