What is 999077?
A placeholder, not a real postal code.
999077 is the number most people type when a form insists on a Hong Kong postal code. Hong Kong has no postal codes, so it is a convention, not an official code from Hongkong Post.
Where 999077 comes from
International shipping and checkout forms are often built for countries that use postal codes, so they will not submit an empty postal code field. Because Hong Kong has none, senders settled on 999077 as a stand-in. It is now widely recognised by courier and e-commerce systems, but no postal authority assigns or endorses it.
What to put in a Hong Kong postal code field
| What to enter | Notes |
|---|---|
| Leave blank | Best for local mail and Hong Kong sites; no code is needed. |
| 999077 | The de-facto placeholder, accepted by most international forms. |
| 00000 | A generic filler some checkouts accept when 999077 is rejected. |
| District name | e.g. Central, Kowloon City, Sha Tin, when a name is allowed. |
Avoid entering 852: that is Hong Kong's telephone country code, not a postal code. There is also no five-digit Hong Kong postal code to look up, despite what some forms imply.
Is it official?
No. Hongkong Post does not issue postal codes and does not require any number to deliver mail within Hong Kong. Treat 999077 as a practical filler for forms built for other countries, nothing more. To address mail correctly, see how to write a Hong Kong address.