This page compiles publicly available administrative and government-portal information as of July 2026. Panchayat boundaries, office contacts, and scheme rules can change — always confirm current details with the Udakishunganj Block/Anchal office or the official portal linked below before relying on them.

The postal PIN code for Udakishunganj town and the surrounding Udakishunganj block in Madhepura district, Bihar is 852220. This code falls under the Bihar postal circle and is used for addressing mail, government correspondence, e-commerce delivery, and most KYC/address-verification forms for residents of the block.

Official verification: use the India Post "Find Pin Code" tool at indiapost.gov.in to confirm the current PIN code for a specific village or post office within the block, since some outlying villages may be served by a neighbouring post office with a different code.

What this PIN code area covers

852220 broadly covers Udakishunganj town and the panchayats that make up Udakishunganj community development block — see our full panchayat and village list for the individual panchayat names. The block sits within Udakishunganj subdivision of Madhepura district, in the Kosi river basin of northeastern Bihar.

Why this matters for residents

  • Online forms and KYC: banks, ration card portals, and scholarship applications ask for a PIN code — use 852220 for addresses within Udakishunganj town and block unless your specific village's post office differs.
  • E-commerce delivery: most major delivery services now serve 852220, though delivery times can be longer than urban PIN codes.
  • Government correspondence: Aadhaar, voter ID, and ration card records use this PIN for the block's registered addresses.
Tip: if an online form rejects 852220 or a delivery service shows it as "not serviceable," double-check you haven't mistyped it as a similar-looking Madhepura-area code — neighbouring blocks in the district have their own distinct PIN codes.

The bottom line

852220 is the PIN code to use for Udakishunganj town and its block; for a specific village, confirming via India Post's own lookup tool is the most reliable way to avoid address-verification issues on government or banking portals.