Mattathari is a village in Arani tehsil in district of Tiruvannamalai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Mattathari was 3,966 which includes 1,982 males and 1,984 females. Mattathari covers 803.88 ha area. Pincode of Mattathari is 632317.