Vallanadu is a village in Srivaikuntam tehsil in district of Thoothukkudi, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Vallanadu was 7,160 which includes 3,546 males and 3,614 females. Vallanadu covers 639.68 ha area. Pincode of Vallanadu is 628252.