DL17 postcode district

Postcodes and sectors

539 of the district's 629 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 54.68025, -1.54130, which locates the district, not a building.

Companies registered in DL17

Companies House lists 703 companies with a registered office in DL17; 242 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 DL17

• County Durham
• North East
• Ferryhill
• Chilton
• Cornforth
• Bishop Middleham
• Rushyford
• Windlestone
• East Howle
• Mainsforth
• Newton Aycliffe
• Thinford

Roads filed under DL17

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.

• Acer Close
• Aidans Walk
• Albert Street
• Alder Drive
• Aldwin Close
• Alington Close
• Alnwick Close
• Arthur Street
• Arthur Terrace
• Ash Grove
• Ash Terrace
• Auckland Road
• Avenue 1
• Avenue 2
• Avenue 3
• Avenue 4
• Babbacombe Drive
• Balmoral Road
• Bamburgh Road
• Bank Top
• Barnard Road
• Barratt Way
• Beaumont Street
• Bede Grove
• Beech Avenue
• Beech Crescent
• Beech Grove
• Bell Street
• Belsay Close
• Bertha Street
• Bessemer Street
• Bethel Court
• Beverley Gardens
• Birch Road
• Bishops Court
• Blackthorn Way
• Blandford Street
• Bowes Close
• Bowness Grove
• Bradbury Way
• Brancepeth Road
• Bridge Road
• Broadoaks
• Broom Road
• Broomside
• Brunel Street
• Burns Road
• Byron Road
• Carlton Street
• Carrsides Lane
• Cathedral Close
• Cavendish Court
• Chester Crescent
• Chestnut Avenue
• Chilton Lane
• Chilton Way
• Church Lane
• Church Road
• Church Street
• Church View

Check an address in DL17

Check an address in DL17

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=DL17" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about DL17

What does a DL17 postcode tell you?

That the address lies in the DL17 district of the DL (Darlington) postcode area, and the place OS Open Names most often lists first for its postcodes is Ferryhill. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 539 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 DL17

• DL164.6 km
• DL57.4 km
• TS298.5 km
• DL48.7 km
• DH69.5 km
• TS219.6 km
• DL1410.2 km
• DH111.4 km
• TS2811.8 km
• DH9912.0 km
• DL1512.6 km
• DH714.6 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids