Thackalai is a village in Kalkulam tehsil in district of Kanniyakumari, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thackalai was 9,551 which includes 4,809 males and 4,742 females. Thackalai covers 144 ha area. Pincode of Thackalai is 629175.