Thathavalli is a village in Tirupathur tehsil in district of Vellore, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thathavalli was 6,453 which includes 3,260 males and 3,193 females. Thathavalli covers 851.11 ha area. Pincode of Thathavalli is 635653.