Chhahun is a village in Kasya tehsil in district of Kushinagar, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Chhahun was 3,493 which includes 1,634 males and 1,859 females. Chhahun covers 270.93 ha area. Pincode of Chhahun is 274303.