GY postcode area

Coordinates: 49°27′58″N 2°32′46″W / 49.466°N 2.546°W / 49.466; -2.546
From Wikipedia, the free encyclopedia

49°27′58″N 2°32′46″W / 49.466°N 2.546°W / 49.466; -2.546

GY is located in the United Kingdom
Coordinates: 49°27′58″N 2°32′46″W / 49.466°N 2.546°W / 49.466; -2.546
CountryUnited Kingdom
Postcode area
Postcode area name
Post towns1
Postcode districts10
Postcode sectors16
Postcodes (live)3,344
Postcodes (total)3,374
Statistics as at May 2020[1]

The GY postcode area, also known as Guernsey postcode area,[2] its post town, is a group of 10 consecutive postal districts covering Guernsey, Alderney, Sark, Herm and the two inhabited lesser islets in that region of the Channel Islands. It was established in 1993 as an extension of the United Kingdom postcode system.[3]

Map of the Bailiwick of Guernsey
Map of the Bailiwick of Guernsey


The approximate coverage of the postal districts. The post town is GUERNSEY for all postcode districts

Postcode district Sector(s) Unit codes Parish or island
GY1 1, 2, 3, 4, 6, 7 Saint Peter Port
3 HR Herm in the above parish[4]
4 AB Jethou in the above parish[4]
GY2 all Saint Sampson
GY3 all Vale
GY4 all Saint Martin
GY5 all Castel
GY6 8 AA – QZ Vale
RA – ZZ Saint Andrew
GY7 9 Saint Pierre du Bois
Saint Saviour
GY8 0 AA – JZ Forest
KA – ZZ Torteval
GY9 3 Alderney
GY10 1 Sark

Previously, both Alderney and Sark were covered by the GY9 district. In March 2009, Royal Mail had "agreed in principle" for the creation of the GY10 district which would cover all addresses on the island of Alderney, leaving just those of smaller Sark in GY9. This was intended to reduce the amount of mail being sent to the wrong island.[5] The States of Alderney opposed doing it that way round,[6] and instead Sark changed from sector GY9 0 to GY10 1 on 5 January 2011.

See also[edit]


  1. ^ "ONS Postcode Directory Version Notes" (ZIP). National Statistics Postcode Products. Office for National Statistics. May 2020. Table 2. Retrieved 19 June 2020.
  2. ^ Royal Mail, Address Management Guide, (2004)
  3. ^ Written Answer [87341], House of Commons Hansard, London, 17 December 2002, column 739W.
  4. ^ a b – GY1 3HR
  5. ^ Island FM (3 March 2009). "Alderney postcodes could soon change to GY10". Guernsey Insight. Jersey: Wave Telecom. Archived from the original on 11 July 2011. Retrieved 20 January 2010.
  6. ^ States of Alderney (27 April 2009). "Minute 22/2009 Any other business: 22.1 Change of postcode for Alderney". Minutes of Policy and Finance Committee 23 March 2009. Alderney. Archived from the original on 26 September 2011. Retrieved 20 January 2010.

External links[edit]