Sellankuppam is a village in Tirukkoyilur tehsil in district of Viluppuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Sellankuppam was 1,298 which includes 653 males and 645 females. Sellankuppam covers 149.76 ha area. Pincode of Sellankuppam is 605754.