Chak Alahdadpur is a village in Mansurchak tehsil in district of Begusarai, Bihar, India. As per the data provided by Census of India in 2011, total population of Chak Alahdadpur was 706 which includes 372 males and 334 females. Chak Alahdadpur covers 19.12 ha area. Pincode of Chak Alahdadpur is 851128.