Punnapattu is a village in Tirukalukundram tehsil in district of Kancheepuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Punnapattu was 264 which includes 128 males and 136 females. Punnapattu covers 205.5 ha area. Pincode of Punnapattu is 603405.