Brunei Postal Codes

Brunei uses postal codes in the format @@#### (# = digit, @ = letter).

Example postal codes

• BT2328
• KA1131
• BA1511

How an address is written in Brunei

This is the order Brunei's postal service expects. Square brackets mark what you replace.

[Recipient name]
[Street address]
[City] [Postal code (BT2328)]
BRUNEI

A postal code is optional in Brunei addresses — mail is deliverable without one, though including it speeds up sorting.

Look up a specific address

For the code covering one particular street or building, Brunei's postal service publishes an official finder: webapps.mtic.gov.bn/SitePages/Post/postcode.aspx. It is authoritative and kept current, which third-party copies often are not.

Country reference

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.