Kadathankudi is a village in Pattukkottai tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kadathankudi was 1,510 which includes 749 males and 761 females. Kadathankudi covers 597.2 ha area. Pincode of Kadathankudi is 614017.