DA3 postcode district

Postcodes and sectors

355 of the district's 538 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 51.38419, 0.30843, which locates the district, not a building.

Companies registered in DA3

Companies House lists 1,099 companies with a registered office in DA3; 215 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 DA3

• Kent
• South East
• Sevenoaks
• Hartley
• Dartford
• New Ash Green
• New Barn
• Longfield
• Longfield Hill
• Fawkham Green
• Gravesham
• Speed Gate

Roads filed under DA3

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.

• Ash Road
• Ayelands Lane
• Banckside
• Barnfield Close
• Beechlands Close
• Bentley Close
• Berrylands
• Billings Hill Shaw
• Birch Close
• Bowes Wood
• Bradbrook Drive
• Brambledown
• Bramblefield Close
• Brands Hatch Road
• Briars Way
• Brickfield Farm
• Brickfield Farm Close
• Broomfields
• Caling Croft
• Capelands
• Carmelite Way
• Castle Hill
• Cavendish Square
• Caxton Close
• Centre Road
• Chantry Avenue
• Chapel Wood
• Chapel Wood Road
• Chartwell Lane
• Cherry Trees
• Cheyne Walk
• Church Road
• Conifer Avenue
• Copse Side
• Culcroft
• Culvey Close
• Deerhurst Close
• Dene Drive
• Dene Walk
• Dickens Close
• Downs Valley
• Essex Road
• Everglade Close
• Fairacre Place
• Fairby Lane
• Fairlight Cross
• Farm Holt
• Fawkham Avenue
• Fawkham Green Road
• Fawkham Road
• Ferndene
• Festival Avenue
• Firecrest Close
• Fortuna Close
• Fosters Mews
• Foxwood Way
• Gabrielspring Road
• Gabriel Spring Road East
• Gallops View
• Gallows Wood

Check an address in DA3

Check an address in DA3

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=DA3" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about DA3

What does a DA3 postcode tell you?

That the address lies in the DA3 district of the DA (Dartford) postcode area, and the place OS Open Names most often lists first for its postcodes is Hartley. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 355 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 DA3

• DA133.1 km
• DA45.3 km
• DA116.3 km
• DA106.3 km
• DA127.3 km
• DA97.4 km
• DA27.5 km
• TN159.4 km
• BR89.4 km
• DA19.9 km
• RM1810.4 km
• RM2010.6 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids