Pachgachhia is a village in Satar Kataiya tehsil in district of Saharsa, Bihar, India. As per the data provided by Census of India in 2011, total population of Pachgachhia was 8,240 which includes 4,396 males and 3,844 females. Pachgachhia covers 443.66 ha area. Pincode of Pachgachhia is 852124.