DT4 postcode district

Postcodes and sectors

997 of the district's 1,508 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 50.60955, -2.46554, which locates the district, not a building.

Companies registered in DT4

Companies House lists 2,608 companies with a registered office in DT4; 1,146 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 DT4

• Dorset
• South West
• Weymouth

Roads filed under DT4

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.

• Abbotsbury Road
• Acacia Close
• Adelaide Crescent
• Admirals Quarter
• Albany Road
• Albert Street
• Alexandra Road
• All Saints' Road
• Alma Road
• Almond Grove
• Aragon Close
• Argyle Road
• Arlington
• Ashton Road
• Astrid Way
• Avenue Road
• Avocet Close
• Avon Close
• Aynsley Court
• Barclay Road
• Barley Way
• Barnhaven Close
• Barrack Road
• Barrow Rise
• Bath Street
• Baycliffe Road
• Bazell Close
• Beachview Close
• Beaulieu
• Beaumont Avenue
• Bedford Road
• Belfield Close
• Belfield Park Avenue
• Belfield Park Drive
• Belgrave
• Belle Vue
• Belle Vue Road
• Belmont Street
• Ben Nevis Road
• Benville Road
• Berkshire Close
• Bincleaves Road
• Blockhouse Lane
• Blossom Grove
• Bohay's Drive
• Boleyn Crescent
• Bond Street
• Boulton Close
• Bradford Road
• Bramble Road
• Briar Close
• Broadmeadow Road
• Broughton Crescent
• Brownlow Street
• Brunswick Terrace
• Bryants Lane
• Bryn Road
• Buxton Close
• Buxton Road
• Caledonian Close

Check an address in DT4

Check an address in DT4

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=DT4" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about DT4

What does a DT4 postcode tell you?

That the address lies in the DT4 district of the DT (Dorchester) postcode area, and the place OS Open Names most often lists first for its postcodes is Weymouth. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 997 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 DT4

• DT33.6 km
• DT57.0 km
• DT111.5 km
• DT215.6 km
• BH2023.9 km
• DT626.2 km
• DT831.2 km
• BH1632.9 km
• DT1134.4 km
• BH1934.9 km
• BH1536.1 km
• DT736.5 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids