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
SE5 Camberwell Greater London Not available Greater London 4
SE6 Bellingham Greater London Not available Greater London 2
SE7 Charlton Greater London Not available Greater London 1
SE8 Deptford Greater London Not available Greater London 3
SE9 Avery Hill Greater London Not available Greater London 5
SG1 Stevenage Hertfordshire Not available Hertfordshire 1
SG10 Green Tye Hertfordshire Not available Hertfordshire 4
SG11 Albury Hertfordshire Not available Hertfordshire 13
SG12 Baker's End Hertfordshire Not available Hertfordshire 15
SG13 Bayford Hertfordshire Not available Hertfordshire 8
SG14 Bengeo Hertfordshire Not available Hertfordshire 8
SG15 Arlesey Bedfordshire Not available Bedfordshire 2
SG16 Henlow Bedfordshire Not available Bedfordshire 3
SG17 Campton Bedfordshire Not available Bedfordshire 5
SG18 Biggleswade Bedfordshire Not available Bedfordshire 11
SG19 Beeston Bedfordshire Not available Bedfordshire 20
SG2 Ardeley Hertfordshire Not available Hertfordshire 12
SG3 Bull's Green Hertfordshire Not available Hertfordshire 6
SG4 Bendish Hertfordshire Not available Hertfordshire 20
SG5 Apsley End Bedfordshire Not available Bedfordshire 13
SG6 Letchworth Hertfordshire Not available Hertfordshire 3
SG7 Ashwell Hertfordshire Not available Hertfordshire 9
SG8 Abington Pigotts Cambridgeshire Not available Cambridgeshire 34
SG9 Anstey Hertfordshire Not available Hertfordshire 22
SK1 Stockport Greater Manchester Not available Greater Manchester 1
SK10 Adlington Cheshire Not available Cheshire 12
SK11 Allgreave Cheshire Not available Cheshire 26
SK12 Birch Vale Cheshire Not available Cheshire 19
SK13 Chunal Derbyshire Not available Derbyshire 3
SK14 Broadbottom Derbyshire Not available Derbyshire 10
SK15 Stalybridge Greater Manchester Not available Greater Manchester 1
SK16 Dukinfield Greater Manchester Not available Greater Manchester 1
SK17 Biggin Derbyshire Not available Derbyshire 42
SK2 Heaviley Greater Manchester Not available Greater Manchester 2
SK22 High Peak Derbyshire Not available Derbyshire 1
SK23 Chapel-en-le-Frith Derbyshire Not available Derbyshire 3
SK3 Stockport Greater Manchester Not available Greater Manchester 1
SK4 Heaton Moor Greater Manchester Not available Greater Manchester 1
SK5 Reddish Greater Manchester Not available Greater Manchester 1
SK6 Bredbury Greater Manchester Not available Greater Manchester 5
SK7 Bramhall Greater Manchester Not available Greater Manchester 3
SK8 Cheadle Greater Manchester Not available Greater Manchester 4
SK9 Alderley Edge Cheshire Not available Cheshire 6
SL0 Iver Buckinghamshire Not available Buckinghamshire 4
SL1 Burnham Berkshire Not available Berkshire 5
SL2 Farnham Common Buckinghamshire Not available Buckinghamshire 4
SL3 Coln-brook Berkshire Not available Berkshire 7
SL4 Boveney Berkshire Not available Berkshire 13
SL5 Ascot Berkshire Not available Berkshire 7
SL6 Bray Berkshire Not available Berkshire 20

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.