Thiruvengadu is a village in Sirkali tehsil in district of Nagapattinam, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thiruvengadu was 8,252 which includes 4,110 males and 4,142 females. Thiruvengadu covers 900.6 ha area. Pincode of Thiruvengadu is 609114.