Kastkasinayak is a village in Gola tehsil in district of Gorakhpur, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Kastkasinayak was 341 which includes 180 males and 161 females. Kastkasinayak covers 55.92 ha area. Pincode of Kastkasinayak is N/A.