Tharatchi 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 Tharatchi was 3,187 which includes 1,547 males and 1,640 females. Tharatchi covers 513.07 ha area. Pincode of Tharatchi is 602026.