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{{short description|Postcode area within the United Kingdom}}
{{Use dmy dates|date=November 2019}}
{{Use British English|date=April 2025}}
{{Infobox UK postcode area|area_code=GY}}
The '''GY postcode area''', also known as '''Guernsey postcode area''',<ref>Royal Mail, ''Address Management Guide'', (2004)</ref> 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 [[Postcodes in the United Kingdom|United Kingdom postcode system]].<ref name="newareas">[https://publications.parliament.uk/pa/cm200203/cmhansrd/vo021217/text/21217w16.htm Written Answer <nowiki>[87341]</nowiki>], House of Commons Hansard, London, 17 December 2002, column 739W.</ref>

[[File:Guernsey sm02.png|250px|right|Map of the Bailiwick of Guernsey]]

==Coverage==
The approximate coverage of the postal districts. The [[post town]] is GUERNSEY for all postcode districts

{| class="wikitable"
|-
! scope="col" | Postcode district
! scope="col" | Sector(s)
! scope="col" | Unit codes
! scope="col" | Parish or island
|-
! scope="row" rowspan="3" | GY1
| 1, 2, 3, 4, 6, 7
|
| [[Saint Peter Port]]
|-
| 3
| HR
| [[Herm]] in the above parish<ref name="guernseypostfinder">http://www.guernseypost.com/postcode_finder – GY1 3HR</ref>
|-
| 4
| AB
| [[Jethou]] in the above parish<ref name="guernseypostfinder"/>
|-
! scope="row" | GY2
| ''all''
|
| [[Saint Sampson, Guernsey|Saint Sampson]]
|-
! scope="row" | GY3
| ''all''
|
| [[Vale, Guernsey|Vale]]
|-
! scope="row" | GY4
| ''all''
|
| [[Saint Martin, Guernsey|Saint Martin]]
|-
! scope="row" | GY5
| ''all''
|
| [[Castel, Guernsey|Castel]]
|-
! scope="row" rowspan="2" | GY6
| rowspan="2" | 8
| AA – QZ
| [[Vale, Guernsey|Vale]]
|-
| RA – ZZ
| [[Saint Andrew, Guernsey|Saint Andrew]]
|-
! scope="row" rowspan="2" | GY7
| rowspan="2" | 9
|
| [[Saint Peter's, Guernsey|Saint Pierre du Bois]]
|-
|
| [[Saint Saviour, Guernsey|Saint Saviour]]
|-
! scope="row" rowspan="2" | GY8
| rowspan="2" | 0
| AA – JZ
| [[Forest, Guernsey|Forest]]
|-
| KA – ZZ
| [[Torteval, Guernsey|Torteval]]
|-
! scope="row" | GY9
| 3
|
| [[Alderney]]
|-
! scope="row" | 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.<ref name="insight090303">{{cite news |url=http://www.guernseyinsight.com/news_1.aspx?id=2:11931&news=2:2029 |title=Alderney postcodes could soon change to GY10 |author=Island FM |date=3 March 2009 |work=Guernsey Insight |publisher=Wave Telecom |access-date=20 January 2010 |location=Jersey |url-status=dead |archive-url=https://web.archive.org/web/20110711132735/http://www.guernseyinsight.com/news_1.aspx?id=2%3A11931&news=2%3A2029 |archive-date=11 July 2011 }}</ref> The [[States of Alderney]] opposed doing it that way round,<ref name="alderney090323">{{cite web|url=http://www.alderney.gov.gg/meetings/minutes/Policy-and-Finance-Committee-23-fs-03-fs-2009 |title=Minute 22/2009 Any other business: 22.1 Change of postcode for Alderney |author=States of Alderney |date=27 April 2009 |work=Minutes of Policy and Finance Committee 23 March 2009 |access-date=20 January 2010 |location=Alderney |url-status=dead |archive-url=https://web.archive.org/web/20110926233156/http://www.alderney.gov.gg/meetings/minutes/Policy-and-Finance-Committee-23-fs-03-fs-2009 |archive-date=26 September 2011 }}</ref> and instead Sark changed from sector GY9 0 to GY10 1 on 5 January 2011.

==See also==
*[[Postcode Address File]]
*[[Guernsey Post]]
*[[List of postcode areas in the United Kingdom]]
*[[JE postcode area|Jersey postcode area]]

==References==
{{Reflist}}

==External links==
*[http://www.poweredbypaf.com/ Royal Mail's Postcode Address File]
*[https://web.archive.org/web/20180926234202/https://www.poweredbypaf.com/how-the-royal-mail-postcode-address-file-paf-helps-organisations-verify-their-customers-identities/ A quick introduction to Royal Mail's Postcode Address File (PAF)]

{{Postcode areas in the United Kingdom}}

{{DEFAULTSORT:Gy Postcode Area}}
[[Category:Communications in Guernsey|Postcode Area GY]]
[[Category:Postcode areas covering dependent territories of the United Kingdom]]

GY postcode area - Revision history

imported>Keith D: Add BOT tag