Gibraltar Postcodes

Gibraltar Postal Codes

If a form asks for a Gibraltar postal code, the practical answer is usually GX11 1AA. Gibraltar does not work like the UK mainland, where different streets and districts have their own detailed postcodes. For most normal mail, business forms, courier labels, and account signups, GX11 1AA is the code people use.

A realistic address would look like this: 104 Main Street, GX11 1AA, Gibraltar. You might also see an address written with the postcode on its own line, like “104 Main Street / GX11 1AA / Gibraltar.” Either version is usually understandable. The important thing is not to invent a more specific postcode for Main Street, Ocean Village, Queensway, or the South District.

The useful data point here is simple: central Gibraltar and outer Gibraltar still use the same public postcode. So a Main Street address, a business near Queensway, or a residential address farther south may all use GX11 1AA. There are internal delivery walks and local areas, but those are not the same as public postcodes you should type into a form. Treat the “central vs outer” difference as address detail, not postcode detail.

A soft mapping would be: Gibraltar town centre, commercial addresses, government offices, residential blocks, and less central areas all generally point back to GX11 1AA. That is practical guidance, not an official street-by-street code map.

The UPU addressing guide for Gibraltar says mailers are asked to use GX11 1AA as the generic postcode for Gibraltar, while the Royal Gibraltar Post Office also lists its own Mail Centre address with GX11 1AA.

So if the website accepts letters and numbers, enter GX11 1AA exactly with the space. If it only accepts numbers, the form is probably built for another country’s ZIP system; do not turn GX11 1AA into a fake numeric code unless you only need a temporary placeholder.