Santhankadu 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 Santhankadu was 2,114 which includes 1,051 males and 1,063 females. Santhankadu covers 283.43 ha area. Pincode of Santhankadu is 614615.