Country Information

CountryUnited Kingdom
ISO CodeGB / GBR
LanguageEnglish
Total Records27,450

United Kingdom uses an alphanumeric code of 5-7 characters (e.g. EC1A 1HQ). Alphanumeric postcode: outward code + inward code.

This database currently holds 27,450 postal codes ranging from AB10 to ZE3, linked to 0 building and address records. Because a single postal code can cover more than one locality or delivery point, the lookup below groups addresses by code and lets you drill into the individual records.

Postal codes matter well beyond mail delivery. Couriers, e-commerce checkout forms and address autocomplete tools rely on the postal code to route a parcel and to verify that the stated address matches the code. Addresses here are organised as Post Town → Locality → County. The code itself is structured as Postcode Area → Postcode District → Postcode Sector → Postcode Unit, which is postal geography and not the same as the administrative hierarchy. When you look up a code here, treat the associated name as a reference point rather than a full postal address — always confirm the street and house number with the sender or recipient before shipping.

Data source: a third-party open dataset. This is an imported reference dataset, not a live government feed; CodeReff does not independently verify each record, so codes may have changed since the snapshot was taken. Use the search box to look up a specific code, or browse the paginated table below.

United Kingdom Postcode Data

3,002 postcode found

Postal Code Post Town Locality County Building / Place Records
CH63 Wirral Merseyside Not available Merseyside 1
CH64 Neston Cheshire Not available Cheshire 1
CH65 Ellesmere Port Cheshire Not available Cheshire 1
CH66 Ellesmere Port Cheshire Not available Cheshire 1
CH7 Afon-wen Denbighshire Not available Denbighshire 33
CH70 Cheshire West and Chester Cheshire Not available Cheshire 1
CH8 Babell Flintshire Not available Flintshire 23
CH88 Cheshire West and Chester Cheshire Not available Cheshire 1
CH99 Cheshire West and Chester Cheshire Not available Cheshire 2
CM0 Asheldham Essex Not available Essex 14
CM1 Broomfield Essex Not available Essex 14
CM11 Billericay Essex Not available Essex 7
CM12 Little Burstead Essex Not available Essex 2
CM13 Childerditch Essex Not available Essex 9
CM14 Brentwood Essex Not available Essex 5
CM15 Doddinghurst Essex Not available Essex 6
CM16 Coopersale Common Essex Not available Essex 9
CM17 Church Langley Essex Not available Essex 10
CM18 Harlow Essex Not available Essex 1
CM19 Great Parndon Essex Not available Essex 3
CM2 Galleyend Essex Not available Essex 8
CM20 Eastwick Essex Not available Essex 3
CM21 Allen's Green Hertfordshire Not available Hertfordshire 3
CM22 Bamber's Green Essex Not available Essex 14
CM23 Berden Essex Not available Essex 10
CM24 Stansted Mountfitchet Essex Not available Essex 1
CM3 Althorne Essex Not available Essex 40
CM4 Blackmore Essex Not available Essex 9
CM5 Abbess Roding Essex Not available Essex 21
CM6 Aythorpe Roding Essex Not available Essex 38
CM7 Bardfield Saling Essex Not available Essex 27
CM77 Braintree Essex Not available Essex 1
CM8 Chipping Hill Essex Not available Essex 10
CM9 Broad Street Green Essex Not available Essex 18
CM92 Harlow Essex Not available Essex 1
CM98 Springfield Essex Not available Essex 1
CM99 Chelmsford Essex Not available Essex 1
CO1 Colchester Essex Not available Essex 1
CO10 Acton Essex Not available Essex 47
CO11 Bradfield Essex Not available Essex 12
CO12 Dovercourt Essex Not available Essex 8
CO13 Frinton-on-Sea Essex Not available Essex 4
CO14 Walton-on-Naze Essex Not available Essex 1
CO15 Clacton-on-Sea Essex Not available Essex 4
CO16 Beaumont Essex Not available Essex 9
CO2 Birch Essex Not available Essex 8
CO3 Beacon End Essex Not available Essex 3
CO4 Blacksmith's Corner Essex Not available Essex 6
CO5 Abberton Essex Not available Essex 16
CO6 Aldham Essex Not available Essex 31

Postcodes by Region

Postcodes by City

Frequently Asked Questions

United Kingdom uses an alphanumeric code of 5-7 characters (e.g. EC1A 1HQ). Alphanumeric postcode: outward code + inward code.
Yes. United Kingdom postal codes are a plain numeric string, so a leading zero is part of the code itself. A code beginning with 0 must be written and stored with that zero — it is not the same as the same digits without it.
27,450 This database currently lists
The records are imported from a third-party open dataset, an open reference dataset. CodeReff does not independently verify each entry, so use the information as a reference rather than an official confirmation.
Enter a full or partial postal code, or a building or street name, in the search box above. You can also browse the paginated table and open any code to see its building and address records.
Information provided on CodeReff is for reference purposes only. Always verify financial and banking details with the relevant institution before use.