Kothavasal is a village in Nannilam tehsil in district of Thiruvarur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kothavasal was 1,479 which includes 734 males and 745 females. Kothavasal covers 314.04 ha area. Pincode of Kothavasal is 609503.