Namasivayapuram is a village in Mayiladuthurai tehsil in district of Nagapattinam, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Namasivayapuram was 1,628 which includes 808 males and 820 females. Namasivayapuram covers 396.65 ha area. Pincode of Namasivayapuram is 609811.