Shahpur Undi is a village in Patori tehsil in district of Samastipur, Bihar, India. As per the data provided by Census of India in 2011, total population of Shahpur Undi was 9,181 which includes 4,825 males and 4,356 females. Shahpur Undi covers 308 ha area. Pincode of Shahpur Undi is 848518.