Kalpattu is a village in Uthukkottai tehsil in district of Thiruvallur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Kalpattu was 2,050 which includes 1,016 males and 1,034 females. Kalpattu covers 437.36 ha area. Pincode of Kalpattu is 601103.