Kathk Purwa is a village in Rudhauli tehsil in district of Basti, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Kathk Purwa was 1,960 which includes 949 males and 1,011 females. Kathk Purwa covers 135.08 ha area. Pincode of Kathk Purwa is 272126.