Find post office by pincode 855106 in district Kishanganj in Bihar, India using online India Pincode finder tool. There are around 1 post offices in district Kishanganj, Bihar, India with similar pincode 855106. All the post offices with pincode 855106 in Kishanganj district of state Bihar are listed above. Finding post office location by pincode is very easy, simply click on any one of the post offices listed above to get its details. For example, if you want to know post office details of Galgalia, just click on the post office name.