Thenmalai is a village in Sivagiri tehsil in district of Tirunelveli, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thenmalai was 10,283 which includes 4,983 males and 5,300 females. Thenmalai covers 3549.95 ha area. Pincode of Thenmalai is 627770.