S12 postcode district

Postcodes and sectors

655 of the district's 850 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 53.34821, -1.40643, which locates the district, not a building.

Companies registered in S12

Companies House lists 953 companies with a registered office in S12; 174 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 S12

• Sheffield
• Yorkshire and the Humber
• North East Derbyshire
• Derbyshire
• East Midlands
• Highlane
• Ridgeway
• Ford
• Birleyhay

Roads filed under S12

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.

• Adastral Avenue
• Albert Road
• Alnwick Drive
• Alnwick Road
• Alport Avenue
• Alport Drive
• Alport Grove
• Alport Place
• Alport Road
• Applegarth Close
• Applegarth Drive
• Arnold Avenue
• Ashfield Close
• Ashfield Drive
• Ashleigh Avenue
• Ashleigh Croft
• Ashleigh Drive
• Ashleigh Place
• Bagshaw's Road
• Barlby Grove
• Bartle Avenue
• Bartle Drive
• Bartle Road
• Bartle Way
• Basegreen Avenue
• Basegreen Close
• Basegreen Crescent
• Basegreen Drive
• Basegreen Place
• Basegreen Road
• Basegreen Way
• Beighton Road
• Birchvale Road
• Birley Lane
• Birley Moor Avenue
• Birley Moor Close
• Birley Moor Crescent
• Birley Moor Drive
• Birley Moor Place
• Birley Moor Road
• Birley Moor Way
• Birley Spa Close
• Birley Spa Drive
• Birley Spa Lane
• Birley Spa Walk
• Birley Vale Avenue
• Birley Vale Close
• Birley Wood Drive
• Blossom Crescent
• Bowman Close
• Bowman Drive
• Brackenfield Grove
• Bretton Grove
• Briarfield Avenue
• Briarfield Crescent
• Brierfield Road
• Brook Green
• Brookhouse Close
• Brookhouse Court
• Brookhouse Drive

Check an address in S12

Check an address in S12

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=S12" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about S12

What does an S12 postcode tell you?

That the address lies in the S12 district of the S (Sheffield) postcode area, and the place OS Open Names most often lists first for its postcodes is Sheffield. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 655 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 S12

• S132.4 km
• S142.5 km
• S23.6 km
• S203.9 km
• S84.8 km
• S15.6 km
• S95.6 km
• S75.7 km
• S216.0 km
• S966.1 km
• S36.2 km
• S986.4 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids