Thachanattukara I is a village in Mannarkad tehsil in district of Palakkad, Kerala, India. As per the data provided by Census of India in 2011, total population of Thachanattukara I was 18,864 which includes 9,255 males and 9,609 females. Thachanattukara I covers 2306 ha area. Pincode of Thachanattukara I is 678583.