Thethakudi South is a village in Vedaranyam tehsil in district of Nagapattinam, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thethakudi South was 7,695 which includes 3,872 males and 3,823 females. Thethakudi South covers 1208.23 ha area. Pincode of Thethakudi South is 614809.