Patjirwa is a village in Bairia tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Patjirwa was 27,172 which includes 14,440 males and 12,732 females. Patjirwa covers 2978.4 ha area. Pincode of Patjirwa is 845438.