Home postal code Azerbaijan
Azerbaijan Postal Code validator
How the postal code format works
- Format
- 4 digits
- Example
- 1000
Things to watch for
- Format-only check — does not confirm the postal code actually exists
- Enter just the 4 digits — Azerbaijani addresses conventionally show them with the country-letter prefix (AZ 1000), which this validator doesn't require
- AZ 1000 marks central Baku, on the same 4-digit pattern Georgia and Armenia use across the Caucasus
^[0-9]{4}$An Azerbaijani postal code is the 4-digit code used to route mail nationwide — for example 1000 for central Baku. On envelopes it’s conventionally written with the country-letter prefix AZ (AZ 1000), the same presentation style used for international sorting across several countries in the wider Caucasus and former Soviet region — but the prefix identifies the country, not the code, which stays 4 digits underneath. Anyone validating an Azerbaijani shipping address, a checkout form, or a spreadsheet of customer records should enter just those 4 digits, without the AZ prefix, for this tool to check.
Because it’s a bare run of digits once the prefix is stripped, a single dropped or transposed digit produces a code that’s still superficially plausible, with nothing about its shape flagging the mistake.
How this validator works
This tool checks that the input is exactly 4 digits with no letters, spaces, or hyphens — the AZ prefix, if present, should be removed before entering the code — entirely in your browser, with nothing sent to a server.
What a pass doesn’t tell you
A postal code here carries no check digit, so matching the 4-digit shape is the most a client-side tool can confirm — not that it’s been assigned to a real district. Confirming that requires the national postal operator’s own postcode lookup.
Scope: this page and tool cover the 4-digit format only — not the AZ prefix, address lookup, or confirming a code is currently in use.
postal code FAQ
Why do Azerbaijani addresses show 'AZ 1000' instead of just '1000'?
AZ is a country-letter prefix used on envelopes for international routing, not part of the postal code itself. The code underneath is just 4 digits — 1000 for central Baku — which is what this validator checks; enter it without the AZ prefix.
What is Baku's postal code?
1000 (written AZ 1000 on envelopes), for the city center.
Does a correctly formatted postal code mean it actually exists?
No. This tool only confirms the string is 4 digits — it doesn't check it against Azerbaijan's national postal operator's actual assignment list. Confirming a code is real, and seeing which district it names, requires that operator's own postcode lookup.