Nagalapuram is a village in Vilathikulam tehsil in district of Thoothukkudi, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Nagalapuram was 4,552 which includes 2,310 males and 2,242 females. Nagalapuram covers 680.35 ha area. Pincode of Nagalapuram is 628905.