Home mã bưu chính Vietnam
Vietnam mã bưu chính validator
How the mã bưu chính format works
- Format
- 5 digits
- Example
- 11000
Things to watch for
- Format-only check — does not confirm the mã bưu chính actually exists
- Always exactly 5 digits with no separators
- Standardized to 5 digits (down from an earlier 6-digit code); the first two digits identify the province or centrally-governed city
^[0-9]{5}$A Vietnamese mã bưu chính (postal code) is the 5-digit code Vietnam Post uses to route mail — for example 11000 for Hoàn Kiếm, the historic central district of Hà Nội. The country’s postcode has been revised more than once: an earlier 6-digit scheme has been standardized down to the current 5-digit format, where the first two digits identify the province or centrally-governed city and the first four narrow delivery to a district. Anyone validating a Vietnamese 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 dropped or transposed digit produces a code that’s still superficially plausible, routing to an entirely different province without any obvious sign something’s wrong.
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 mã bưu chính carries no check digit, so matching the 5-digit shape is the most a client-side tool can confirm — not that Vietnam Post has assigned it to a real district. Confirming that requires Vietnam Post’s own postcode lookup.
Scope: this page and tool cover format validation only — not address lookup or confirming a mã bưu chính is currently in use.
mã bưu chính FAQ
Has Vietnam's postal code always had 5 digits?
No. Vietnam's national postcode system originally used 6 digits, but has since been standardized to 5 digits — the format now in official use, and the one this validator checks.
What do the digits of a Vietnamese mã bưu chính encode?
The first two digits identify the centrally-governed province or city, and the first four narrow that down to a district or corresponding administrative unit — for example 11000 for Hoàn Kiếm, the central district of Hà Nội.
Does a correctly formatted mã bưu chính mean it actually exists?
No. This tool only confirms the string is 5 digits — it doesn't check it against Vietnam Post's actual assignment list. Confirming a mã bưu chính is real, and seeing which district it names, requires Vietnam Post's own postcode lookup.