Chak Pahar is a village in Sahdai Buzurg tehsil in district of Vaishali, Bihar, India. As per the data provided by Census of India in 2011, total population of Chak Pahar was 374 which includes 203 males and 171 females. Chak Pahar covers 17 ha area. Pincode of Chak Pahar is 844507.