Postal codes in Guernsey

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

Guernsey postcode area
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


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