Chak Mastam Shah is a village in Phulpur tehsil in district of Azamgarh, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Chak Mastam Shah was 23 which includes 15 males and 8 females. Chak Mastam Shah covers 11.62 ha area. Pincode of Chak Mastam Shah is 276304.