Shahmahmad Bigha is a village in Ratni Faridpur tehsil in district of Jehanabad, Bihar, India. As per the data provided by Census of India in 2011, total population of Shahmahmad Bigha was 812 which includes 428 males and 384 females. Shahmahmad Bigha covers 142 ha area. Pincode of Shahmahmad Bigha is N/A.