Kottaiyur is a village in Thirumayam tehsil in district of Pudukkottai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kottaiyur was 2,273 which includes 1,109 males and 1,164 females. Kottaiyur covers 977.21 ha area. Pincode of Kottaiyur is 622506.