Kottaiyur is a village in Denkanikottai tehsil in district of Krishnagiri, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kottaiyur was 6,340 which includes 3,356 males and 2,984 females. Kottaiyur covers 2059.58 ha area. Pincode of Kottaiyur is 635102.