Avathandai is a village in Kadaladi tehsil in district of Ramanathapuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Avathandai was 2,519 which includes 1,211 males and 1,308 females. Avathandai covers 1278.26 ha area. Pincode of Avathandai is 623120.