India PIN code validator
How the PIN code format works
- Format
- 6 digits; the first digit denotes the postal region
- Example
- 110001
Things to watch for
- Format-only check — does not confirm the PIN code actually exists
- 6 digits total; the first digit is the postal region and cannot be 0
^[1-9][0-9]{5}$An Indian PIN code (Postal Index Number) is the 6-digit code India Post uses to route mail to a specific delivery office, for example 110001 for New Delhi’s GPO. Anyone validating a shipping address, an e-commerce checkout, or a database of Indian customer records needs the PIN code to at least be correctly shaped before it’s trusted for delivery.
Because the code is purely numeric and fairly long, a single transposed or dropped digit is easy to miss by eye but still looks like a plausible PIN code — it just routes to the wrong region entirely. Catching that at the point of entry is far cheaper than a delivery failure downstream.
What this validator checks
This tool confirms the input is exactly 6 digits with no letters or separators, and that the first digit isn’t zero (India Post reserves 1-9 for its postal regions). It runs entirely in your browser, with nothing sent to a server and no signup required.
What a pass doesn’t tell you
A PIN code carries no check digit, so a correctly shaped 6-digit string is the most a client-side tool can confirm — not that India Post has actually assigned it to a real delivery office or that it matches the town or state also entered on a form. Confirming that requires India Post’s own PIN code directory.
Scope: this page and tool cover PIN code format validation only — not address lookup, delivery-office matching, or confirming a code is currently in use.
PIN code FAQ
What does PIN stand for, and what do the digits mean?
PIN stands for Postal Index Number. India Post uses the 6 digits to sort mail hierarchically: the first digit marks one of nine broad postal regions (plus a defence-only region), the second narrows it to a sub-region, and the remaining digits identify the sorting district and delivery office.
Can a PIN code start with 0?
No. India Post never assigns a postal region starting with 0, so a genuine PIN code always starts with 1 through 9. A string starting with 0 fails validation immediately regardless of the remaining digits.
Does a correctly formatted PIN code mean it actually exists?
No. This tool only confirms the string is 6 digits starting with 1-9 — it doesn't check whether India Post has actually assigned that PIN code to a delivery office. Confirming that requires India Post's own PIN code directory.