Khanjahanpur is a village in Cheria Bariarpur tehsil in district of Begusarai, Bihar, India. As per the data provided by Census of India in 2011, total population of Khanjahanpur was 11,069 which includes 5,807 males and 5,262 females. Khanjahanpur covers 1045 ha area. Pincode of Khanjahanpur is 851132.