Unnamalaipalayam is a village in Chengam tehsil in district of Tiruvannamalai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Unnamalaipalayam was 905 which includes 475 males and 430 females. Unnamalaipalayam covers 321.25 ha area. Pincode of Unnamalaipalayam is 606705.