Chak Dumara is a village in Dudhi tehsil in district of Sonbhadra, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Chak Dumara was 420 which includes 215 males and 205 females. Chak Dumara covers 8.4 ha area. Pincode of Chak Dumara is 231208.