Dumari Arjun is a village in Hata tehsil in district of Kushinagar, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Dumari Arjun was 1,249 which includes 575 males and 674 females. Dumari Arjun covers 103.63 ha area. Pincode of Dumari Arjun is 274203.