Sillathur 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 Sillathur was 3,912 which includes 1,945 males and 1,967 females. Sillathur covers 702.29 ha area. Pincode of Sillathur is 614902.