Sillangulam is a village in Ottapidaram tehsil in district of Thoothukkudi, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Sillangulam was 4,524 which includes 2,238 males and 2,286 females. Sillangulam covers 1282.7 ha area. Pincode of Sillangulam is 628718.