Search 1,65,627 post offices across 19,586 PIN codes — by number, area name, district, or city — and see exactly how each 6-digit code is built.
A PIN code isn't just an address suffix — it's the routing key that gets a parcel, a cheque, or a ration card to the right sorting office.
Every checkout page uses your PIN to work out delivery zones, courier partners, and cash-on-delivery eligibility before it even asks for your city.
Bank account opening, Aadhaar updates, and insurance forms all validate your address against the official PIN register to catch typos and mismatches.
Ration cards, voter rolls, and census data are tied to PIN-linked jurisdictions — which is why the office name, not just the number, matters.
India's PIN system was introduced in 1972 by Shri Sriram Bhikaji Velankar. Every digit narrows the location further than the last.
Splits the country into 9 zones (1–8 for geographic regions, 9 reserved for the Army Postal Service). It's the broadest sort — think of it as the shelf in the sorting hall.
Narrows the zone to a cluster of states or a large postal circle, grouping mail before it's routed further.
Combined with the first two digits, this identifies the specific sorting district that handles onward delivery.
These pin down the exact post office — Head Office, Sub Office, or Branch Office — responsible for final delivery.
Every entry in the register carries a type stamp. Here's what each one means on the ground.
The main post office for a district or town — administers the Sub and Branch Offices under it, and usually offers the full range of postal and banking services.
A full-service post office reporting to a Head Office — typically found in a locality, market, or institution, and often the office your building's PIN actually maps to.
The smallest unit, usually in a village or rural cluster, reporting to a Sub Office — the last link in the delivery chain.
