Kunnathur 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 Kunnathur was 4,819 which includes 2,367 males and 2,452 females. Kunnathur covers 569.77 ha area. Pincode of Kunnathur is 632314.