Sadaiyarkoil is a village in Orathanadu tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Sadaiyarkoil was 1,974 which includes 1,007 males and 967 females. Sadaiyarkoil covers 751.26 ha area. Pincode of Sadaiyarkoil is 614019.