Home postal code Pakistan
Pakistan Postal Code validator
How the postal code format works
- Format
- 5 digits
- Example
- 44000
Things to watch for
- Format-only check — does not confirm the postal code actually exists
- Always exactly 5 digits with no separators
- The leading digit marks one of Pakistan Post's broad postal zones — Islamabad's codes start with 4
^[0-9]{5}$A Pakistani postal code is the 5-digit code Pakistan Post uses to route mail — for example 44000 for central Islamabad. The leading digit sorts mail into one of the country’s broad postal zones before the remaining four digits narrow it down to a city or district office. Anyone validating a Pakistani shipping address, a checkout form, or a spreadsheet of customer records needs the code in the correct 5-digit shape before it’s trusted.
Because it’s a bare run of digits with no separator, a transposed pair of leading digits can silently reroute an address to an entirely different, equally plausible postal zone hundreds of kilometres away.
How this validator works
This tool checks that the input is exactly 5 digits with no letters, spaces, or hyphens, entirely in your browser, with nothing sent to a server.
What a pass doesn’t tell you
A Pakistani postal code carries no check digit, so matching the 5-digit shape is the most a client-side tool can confirm — not that Pakistan Post has assigned it to a real district. Confirming that requires Pakistan Post’s own postcode lookup.
Scope: this page and tool cover format validation only — not address lookup or confirming a postal code is currently in use.
postal code FAQ
What does the first digit of a Pakistani postal code mean?
It marks one of Pakistan Post's broad postal zones. Islamabad's codes start with 4 (44000), Lahore's with 5 (54000), and Karachi's with 7 (74200) — a coarse routing hint rather than a precise district marker.
How many digits does a Pakistani postal code have?
Five, always written as a plain run of digits with no separator — for example 44000 for central Islamabad.
Does a correctly formatted postal code mean it actually exists?
No. This tool only confirms the string is 5 digits — it doesn't check it against Pakistan Post's actual assignment list. Confirming a postal code is real, and seeing which town or district it names, requires Pakistan Post's own postcode lookup.