Gahilo Urf Barahanpur is a village in Saraiya tehsil in district of Muzaffarpur, Bihar, India. As per the data provided by Census of India in 2011, total population of Gahilo Urf Barahanpur was 433 which includes 211 males and 222 females. Gahilo Urf Barahanpur covers 47.91 ha area. Pincode of Gahilo Urf Barahanpur is 843123.