Mathia Bachangir is a village in Hasanpura tehsil in district of Siwan, Bihar, India. As per the data provided by Census of India in 2011, total population of Mathia Bachangir was 446 which includes 191 males and 255 females. Mathia Bachangir covers 27.96 ha area. Pincode of Mathia Bachangir is 841240.