Home 邮政编码 (Yóuzhèng Biānmǎ) China
China 邮政编码 (Yóuzhèng Biānmǎ) validator
How the 邮政编码 (Yóuzhèng Biānmǎ) format works
- Format
- 6 digits
- Example
- 100000
Things to watch for
- Format-only check — does not confirm the 邮政编码 actually exists
- Always exactly 6 digits with no separators
- Introduced in 1980; the first two digits identify a province or municipality (10 = Beijing)
^[0-9]{6}$A Chinese 邮政编码 (Yóuzhèng Biānmǎ) is the 6-digit postcode China Post introduced nationwide in 1980, written directly before the rest of the address — for example 100000 for a general Beijing address. Like several other hierarchical systems, it layers meaning into position: the leading two digits mark a province or municipality, the third digit narrows to a prefecture-level city, and the trailing three digits progressively refine that down toward a county or delivery district. Anyone validating a Chinese shipping address, a checkout form, or a spreadsheet of customer records needs the code in the correct 6-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 6 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 邮政编码 carries no check digit, so matching the 6-digit shape is the most a client-side tool can confirm — not that China Post has assigned it to a real district. Confirming that requires China Post’s own postcode lookup.
Scope: this page and tool cover format validation only — not address lookup or confirming a 邮政编码 is currently in use.
邮政编码 (Yóuzhèng Biānmǎ) FAQ
What is 邮政编码 and when was it introduced?
Yóuzhèng Biānmǎ, literally 'postal code number', is China's 6-digit postcode, introduced nationwide by China Post in 1980. It's written directly before the address, e.g. 100000 for a general Beijing address.
What do the digits of a Chinese postal code encode?
The system is hierarchical: the first two digits identify a province, autonomous region, or municipality (10 for Beijing), the third narrows to a prefecture-level city, and the last three progressively pin down a county or delivery district.
Does a correctly formatted 邮政编码 mean it actually exists?
No. This tool only confirms the string is 6 digits — it doesn't check it against China Post's actual assignment list. Confirming a postal code is real, and seeing which district it names, requires China Post's own postcode lookup.