Vadamazhai 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 Vadamazhai was 3,805 which includes 1,923 males and 1,882 females. Vadamazhai covers 713.88 ha area. Pincode of Vadamazhai is 614806.