Bairia is a Branch Post Office (B.O.) located in the Kishanganj block of the Kishanganj district in Bihar, India. The delivery status of this post office is available. It is part of the Purnea division of the Muzaffarpur. The pincode of Bairia is 855101.

PIN codes, also known as postal codes, help streamline mail delivery in India. Let's break down the different parts of Bairia's PIN code, 855101:

• (85): This identifies the postal circle, which is a region group of states. In this case, "85" represents the Bihar postal circle.
• (855) : These digits represent the sorting district. Here, "855" points to the Kishanganj district within Bihar. Mail for this area is sorted here before final delivery.
• (101) : These pinpoint the specific delivery office within the sorting district. For Bairia, "101" corresponds to the Bairia Branch Office.