S40 postcode district

Postcodes and sectors

1,084 of the district's 1,683 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. The live postcodes centre on 53.23409, -1.44662, which locates the district, not a building.

Companies registered in S40

Companies House lists 2,259 companies with a registered office in S40; 750 of them at addresses shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for S40

• Chesterfield
• Derbyshire
• East Midlands
• North East Derbyshire

Roads filed under S40

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• Abney Close
• Albion Road
• Alexandra Road West
• Alford Close
• Alma Street West
• Amber Crescent
• Angel Yard
• Archdale Close
• Arden Close
• Ardsley Road
• Ashbourne Close
• Ashdown Drive
• Ashgate Avenue
• Ashgate Road
• Ashgate Valley Road
• Ashton Close
• Ash Tree Close
• Ashurst Close
• Ash Vale
• Askew Way
• Aspley Close
• Atlow Close
• Auckland's Place
• Avondale Road
• Bacons Lane
• Baden Powell Avenue
• Baden Powell Road
• Badger Croft
• Ballidon Close
• Bank Street
• Barbon Close
• Bar Croft
• Barker Fold
• Barker Lane
• Barnham Close
• Barton Crescent
• Baslow Road
• Baycliff Drive
• Beckingham Way
• Beechdale Close
• Beehive Road
• Beetwell Street
• Belvedere Avenue
• Belvedere Close
• Bennimoor Way
• Bentham Road
• Berwick Avenue
• Berwick Close
• Berwick Court
• Berwyn Close
• Birchen Close
• Birchwood Crescent
• Birdholme Crescent
• Birkdale Drive
• Blackdown Avenue
• Blyth Close
• Bobbin Mill Lane
• Bodmin Way
• Boulton Close
• Boythorpe Avenue

Check an address in S40

Check an address in S40

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=S40" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about S40

What does an S40 postcode tell you?

That the address lies in the S40 district of the S (Sheffield) postcode area, and the place OS Open Names most often lists first for its postcodes is Chesterfield. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,084 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.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, 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.

Districts nearest S40

• S490.8 km
• S411.9 km
• S424.4 km
• S187.5 km
• S457.8 km
• S438.0 km
• S448.9 km
• S1711.1 km
• S2111.3 km
• S812.0 km
• S1412.4 km
• S2012.8 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids