What does a GY4 postcode tell you?

That the address lies in the GY4 district of the GY (Guernsey) postcode area. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 253 live postcodes.

GY4 postcode district

GY4, in the GY (Guernsey) postcode area, has 253 live and 2 terminated postcodes in the ONS Postcode Directory of August 2026. Guernsey is a Crown Dependency, not part of Great Britain, and OS Open Names does not cover it.

postcode area	GY (Guernsey)
live postcodes	253
terminated postcodes	2
sectors	1
directory release	2026-08

Postcodes and sectors

253 of the district's 255 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there.

sector	live	terminated
GY4 6	253	2

Places OS Open Names lists for GY4

OS Open Names does not cover Guernsey, so it lists no place for the district's postcodes.

Roads filed under GY4

OS Open Names covers Great Britain only and does not reach Guernsey, so a street in GY4 cannot be confirmed from the register and the lookup answers about the postcode alone.

Check an address in GY4

Common questions about GY4

What does a GY4 postcode tell you?: That the address lies in the GY4 district of the GY (Guernsey) postcode area. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 253 live postcodes.

Where the counts come from

ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Other districts in GY

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