Chak Mahmuda is a village in Maharajganj tehsil in district of Siwan, Bihar, India. As per the data provided by Census of India in 2011, total population of Chak Mahmuda was 1,839 which includes 904 males and 935 females. Chak Mahmuda covers 101.86 ha area. Pincode of Chak Mahmuda is 841444.