Koothankoil is a village in Chidambaram tehsil in district of Cuddalore, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Koothankoil was 802 which includes 408 males and 394 females. Koothankoil covers 244.85 ha area. Pincode of Koothankoil is 608401.