Unamalai 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 Unamalai was 1,751 which includes 910 males and 841 females. Unamalai covers 482.13 ha area. Pincode of Unamalai is 603306.