Pachgachhia is a village in Marauna tehsil in district of Supaul, Bihar, India. As per the data provided by Census of India in 2011, total population of Pachgachhia was 2,407 which includes 1,258 males and 1,149 females. Pachgachhia covers 326.6 ha area. Pincode of Pachgachhia is N/A.