Kilvasalai is a village in Maduranthakam tehsil in district of Kancheepuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kilvasalai was 1,351 which includes 686 males and 665 females. Kilvasalai covers 692.43 ha area. Pincode of Kilvasalai is 603313.