Othiyathur is a village in Tirukkoyilur tehsil in district of Viluppuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Othiyathur was 4,301 which includes 2,196 males and 2,105 females. Othiyathur covers 539.55 ha area. Pincode of Othiyathur is 605701.