Thirunariyur is a village in Kumbakonam tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thirunariyur was 6,786 which includes 3,305 males and 3,481 females. Thirunariyur covers 313.33 ha area. Pincode of Thirunariyur is 612602.