India's postal index,
as a connected graph.
Every PIN code linked to its post offices, neighbouring PINs, administrative boundaries, infrastructure crossings, and data provenance. One independent reference — no accounts, no ads.
PIN
560001
Bengaluru GPO
Postal 4 offices, Head Office tier
Spatial 11 adjacent PINs
Admin Karnataka → Bengaluru Urban
Sources India Post, derived, community
Not a lookup box.
Most PIN code sites return a single row from a database. pincode.fyi treats each PIN as a node in a graph — where it sits, what it touches, which offices serve it, how it relates to the PINs around it, and where every fact came from.
The data model is being built to support neighbouring-PIN traversal, administrative hierarchy (state → district → taluk → PIN), post office metadata, infrastructure layers (rail, highway, river crossings), and full source provenance so you can tell official data from derived or community-contributed data.
What each PIN will carry.
- Post offices
- Name, type (HO/SO/BO), delivery status, parent office, and the hierarchy chain up to the circle office.
- Neighbours
- Adjacent PINs by shared boundary or nearest centroid. Traverse the postal map without a map.
- Admin regions
- State, district, taluk / tehsil, and the legislative constituencies each PIN falls in.
- Infrastructure
- Railway stations, national highways, and river crossings that intersect the PIN area.
- Provenance
- Every fact tagged: official (India Post / Census), derived (computed from geometry), or community. Versioned, attributable.