DL3 postcode district

Postcodes and sectors

1,152 of the district's 1,544 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 54.53248, -1.57167, which locates the district, not a building.

Companies registered in DL3

Companies House lists 2,661 companies with a registered office in DL3; 918 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 DL3

• Darlington
• North East
• Whessoe
• Coatham Mundeville

Roads filed under DL3

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.

• Abbey Road
• Abbotsfield Way
• Abbott's Yard
• Abercorn Court
• Acacia Street
• Agricola Court
• Ainsley Grove
• Aldgrove Way
• Alliance Street
• Alverton Drive
• Alwent Close
• Alwyn Road
• Amberley Grove
• Amiens Close
• Ampleforth Way
• Ann's Terrace
• Antiquary Drive
• Appleton Close
• Archdeacon Crescent
• Archer Street
• Arncliffe Grove
• Arras Close
• Arthur Street
• Arundel Drive
• Ashcroft Road
• Ash Tree Close
• Atherstone Way
• Auckland Avenue
• Auckland Oval
• Ayton Drive
• Banklands Road
• Barlby Drive
• Barlow Street
• Barnard Street
• Barnes Close
• Barnes Road
• Barningham Street
• Barrett Road
• Barron Street
• Bartlett Street
• Bates Avenue
• Baydale Road
• Beaconsfield Street
• Bedburn Drive
• Bede Road
• Beechwood Avenue
• Bell's Place
• Bellburn Lane
• Berrybank Crest
• Berwick Road
• Birkdale Road
• Blackwell
• Blackwell Close
• Blackwell Grove
• Blackwell Lane
• Blackwell Scar
• Blanchland Green
• Bliss Close
• Bloomfield Road
• Blossom Close

Check an address in DL3

Check an address in DL3

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=DL3" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about DL3

What does a DL3 postcode tell you?

That the address lies in the DL3 district of the DL (Darlington) postcode area, and the place OS Open Names most often lists first for its postcodes is Darlington. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,152 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 DL3

• DL21.6 km
• DL12.1 km
• DL59.5 km
• DL411.8 km
• TS1613.9 km
• TS2114.0 km
• DL1015.2 km
• DL1415.3 km
• TS1915.5 km
• TS1516.1 km
• TS1816.3 km
• DL1716.5 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids