GY postcode area

The GY postcode area is a mail distribution system serving the Channel Islands, divided into ten postal districts. These districts manage the sorting and delivery of correspondence across Guernsey, Alderney, Sark, Herm, and surrounding smaller islands.

The GY postcode system was introduced in 1993 as an extension of the British postal organization for the Channel Islands. This implementation standardized mail processing and improved distribution efficiency across all the islands.

Each district within the GY postcode system reflects local geography and community structure, with sectors named after parishes like Saint Peter Port and Saint Sampson.

The area contains thousands of postcodes needed for accurate addressing across all islands. Both visitors and residents can use these codes to ensure reliable mail delivery.

Each postal district manages its own delivery network, with Alderney receiving its own sector to improve efficiency. The structure shows how geography and administration intersect in modern postal systems.

GPS coordinates: 49.46600,-2.54600

Latest update: December 7, 2025 19:26