Kunnathur is a village in Tirukalukundram tehsil in district of Kancheepuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kunnathur was 1,713 which includes 849 males and 864 females. Kunnathur covers 645.92 ha area. Pincode of Kunnathur is 603102.