Chak Alahdad is a village in Sahebganj tehsil in district of Muzaffarpur, Bihar, India. As per the data provided by Census of India in 2011, total population of Chak Alahdad was 1,195 which includes 636 males and 559 females. Chak Alahdad covers 103.67 ha area. Pincode of Chak Alahdad is 843152.