Christmas Island Postal Codes
Christmas Island uses postal codes in the format #### (# = digit, @ = letter).
1 postal codes are recorded for Christmas Island in the open data sources below.
Example postal codes
6798
Postal codes by place
Places in Christmas Island with a recorded postal code.
| Place | Postal code |
|---|---|
| Territory of Christmas Island | 6798 |
How an address is written in Christmas Island
This is the order Christmas Island's postal service expects. Square brackets mark what you replace.
[Recipient name]
[Street address]
[City] [State] [Postal code (6798)]
CHRISTMAS ISLAND
A postal code is optional in Christmas Island addresses — mail is deliverable without one, though including it speeds up sorting.
Country reference
| ISO 3166-1 alpha-2 | CX |
|---|---|
| ISO 3166-1 alpha-3 | CXR |
| Capital | Flying Fish Cove |
| Telephone code | +61 |
| Currency | Dollar (AUD) |
| Internet TLD | .cx |
Sources and licensing
Postal code data from GeoNames, used under the Creative Commons Attribution 4.0 International licence. Address formats and validation rules derive from Google's international address metadata, cross-checked against Universal Postal Union addressing standards. Last verified August 2026. Confirm time-critical addresses with the destination country's postal operator.
Postal codes by town and city
1 places in Christmas Island have a recorded postal code. The 0 largest have their own page; the rest are listed alphabetically.