Unnamalaisamudram is a village in Katpadi tehsil in district of Vellore, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Unnamalaisamudram was 579 which includes 296 males and 283 females. Unnamalaisamudram covers 91.98 ha area. Pincode of Unnamalaisamudram is 632202.