Kottaiyur is a village in Ilayangudi tehsil in district of Sivaganga, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kottaiyur was 1,834 which includes 909 males and 925 females. Kottaiyur covers 789.29 ha area. Pincode of Kottaiyur is 630702.