Kottarai is a village in Kunnam tehsil in district of Perambalur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kottarai was 2,329 which includes 1,237 males and 1,092 females. Kottarai covers 1217.39 ha area. Pincode of Kottarai is 621708.