Gibraltar is a British Overseas Territory located on the southern tip of the Iberian Peninsula, bordering Spain. Though small in area, it has a well-developed infrastructure and a highly organized postal system managed by the Royal Gibraltar Post Office (RGPO).

Gibraltar’s addressing format closely mirrors that of the United Kingdom, with some unique regional distinctions. It generally includes the recipient’s name, property number, street name, and a clearly defined postcode (beginning with “GX”). As a compact and densely populated territory, street names and numbers are reliably used in both business and residential areas.

Government buildings and large commercial entities may include additional elements, such as department names or PO Boxes. The simplicity and consistency of Gibraltar’s format ensure reliable mail handling domestically and internationally. Below, we outline Gibraltar’s address structures for various purposes, including sample formats and best practices.

Recipient Name

Start with the recipient’s full name. When sending mail to a business, begin with the company name. Follow up with “ATTN:” and the recipient’s name and department. This is particularly helpful in large corporate offices.

Street Address or P.O. Box

Include the building or flat number followed by the street name. P.O. Boxes are common for business correspondence and are formatted as “P.O. Box” followed by the number.

Building Name or Level (Optional)

If applicable, include a building or floor name, especially in multi-tenant buildings or business complexes.

Postcode

Gibraltar uses the GX11 1AA postcode for all areas.

Country Name

Complete the address with “GIBRALTAR” in uppercase letters for international delivery.

Residential Address Format

For residential mail in Gibraltar, begin with the recipient’s name, followed by the building number and street name. All areas of Gibraltar share the same postcode, GX11 1AA, making it a mandatory part of every address.

Rural Address Format

While Gibraltar does not have rural zones in the traditional sense, some properties near natural landmarks or cliffs require specific location markers. Include building or flat names and references like “near Europa Point” or “above Queensway.”

Business Address Format

Business mail begins with the company name, followed by the recipient’s name and department. Use detailed commercial address elements such as office suites or building names.

International Address Format for NGOs and Organizations

NGOs or international bodies should list the entity name and department, followed by a full postal address. Accurate formatting ensures cross-border delivery is smooth.

P.O. Box Address Format

For mail routed through a post office box, simply include “P.O. BOX” followed by the number and standard city/postcode information.

Military Address Format

Military addresses in Gibraltar are straightforward. Begin with the rank and name, followed by the base or unit name. Use a P.O. Box or internal base identifier if provided.

Government Office Address Format

For government-related correspondence, start with the office name, followed by the department. Use the full address of the building or complex where the department operates.

Address Format for Multiple Recipients

For families or multiple employees at the same address, write each name separately for clarity.

Address Format for Courier Services

For courier deliveries, always include a phone number for contact. This ensures successful delivery, especially to high-security buildings.

Royal Gibraltar Post Office (RGPO) is the official national postal service provider in Gibraltar, operated by the Government of Gibraltar. As a recognized postal authority under the Universal Postal Union (UPU), RGPO fulfills the territory’s international postal responsibilities and maintains strong links with the UK Royal Mail.

RGPO offers comprehensive domestic and international mailing services, including standard and registered letters, parcels, P.O. Box services, and tracked delivery. Due to Gibraltar’s compact urban structure, the postal system is highly organized and efficient.

The RGPO operates multiple Post Office branches and P.O. Box centers across Gibraltar, providing reliable access to mail collection and financial services. These include postal orders, local bill payments, and value-added options like express shipping and secure handling. Gibraltar’s postal system is well-integrated with international networks, ensuring dependable mail services for both personal and commercial needs worldwide.

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If you are curious about the format used in any other country, visit our global address format page to learn about the format followed in countries worldwide.