Kottaiyur is a village in Karaikkudi tehsil in district of Sivaganga, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kottaiyur was 68 which includes 31 males and 37 females. Kottaiyur covers 705.01 ha area. Pincode of Kottaiyur is 630106.