GY postcode area

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

Guernsey postcode area
GY is located in the United Kingdom
Postcode area GY
Postcode area name Guernsey
Post towns 1
Postcode districts 10
Postcode sectors 16
Postcodes (live) 3,329
Postcodes (total) 3,351
Statistics as at February 2012[1]

The GY postcode area, also known as the Guernsey postcode area,[2] is a group of postal districts covering Guernsey, Alderney & Sark.


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

Postcode district Sector Unit codes Parish or island
GY1 all Saint Peter Port
3 Herm[3]
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

In March 2009, it was reported that Royal Mail had "agreed in principle" for the creation of a GY10 postcode district that would cover all addresses on the island of Alderney, to reduce confusion with addresses on the island of Sark.[4] The proposal was opposed by the States of Alderney[5] and consequently it was Sark's postcodes that were subsequently changed, from sector GY9 0 to sector GY10 1, on 5 January 2011.

See also[edit]


  1. ^ "ONS Postcode Directory Version Notes" (ZIP). National Statistics Postcode Products. Office for National Statistics. February 2012. Table 2. Retrieved 21 April 2012. 
  2. ^ Royal Mail, Address Management Guide, (2004)
  3. ^ – GY1 3HR
  4. ^ Island FM (3 March 2009). "Alderney postcodes could soon change to GY10". Guernsey Insight (Jersey: Wave Telecom). Retrieved 20 January 2010. 
  5. ^ States of Alderney (27 April 2009 (signed)). "Minute 22/2009 Any other business: 22.1 Change of postcode for Alderney". Minutes of Policy and Finance Committee 23 March 2009. Alderney. Retrieved 20 January 2010.  Check date values in: |date= (help)