Koothanur is a village in Ulundurpettai tehsil in district of Viluppuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Koothanur was 2,016 which includes 1,023 males and 993 females. Koothanur covers 354.86 ha area. Pincode of Koothanur is 607201.