NP23 postcode district

Postcodes and sectors

883 of the district's 1,014 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 51.78543, -3.19769, which locates the district, not a building.

Companies registered in NP23

Companies House lists 818 companies with a registered office in NP23; none of them at an address 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 NP23

• Wales
• Blaenau Gwent
• Ebbw Vale
• Glyn Ebwy
• Brynmawr
• Bryn-Mawr
• Nantyglo
• Cwm
• Tredegar
• Sir Fynwy
• Monmouthshire
• Abertyleri
• Abertillery

Roads filed under NP23

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.

• Acorn Close
• Alandale Mews
• Alandale Road
• Alan Davies Way
• Alder Grove
• Alexandra Street
• Alexandria Terrace
• Alfred Street
• Allotment Road
• Alma Street
• Alma Terrace
• Andrews Court
• Aneurin Place
• Angel Square
• Annes Court
• Armoury Terrace
• Ash Grove
• Ash Street
• Attlee Close
• Attlee Road
• Aubrey Terrace
• Augusta Park
• Augusta Street
• Avon Court
• Aynho Place
• Badminton Grove
• Bailey Street
• Bangor Road
• Banna Bungalows
• Baptist Place
• Barley Field Road
• Barnes Close
• Bath Lane
• Beacon View
• Beaufort Hill
• Beaufort Rise
• Beaufort Road
• Beaufort Street
• Beaufort Terrace
• Beaumont Close
• Beechfield Close
• Beech Grove
• Belle Vue
• Bethcar Street
• Bethel Place
• Beulah Place
• Bevan Crescent
• Big Lane
• Birch Grove
• Bishop's Place
• Blaen-Afon Road
• Blaen-Nant Road
• Blaen Cendl
• Blaina Road
• Blue Lake Close
• Boundary Street
• Brecnock Close
• Brecon Heights
• Brentwood Place
• Briar Close

Check an address in NP23

Check an address in NP23

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=NP23" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about NP23

What does an NP23 postcode tell you?

That the address lies in the NP23 district of the NP (Newport) postcode area, and the place OS Open Names most often lists first for its postcodes is Ebbw Vale. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 883 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 NP23

• NP224.4 km
• NP136.8 km
• NP247.9 km
• NP89.0 km
• CF819.8 km
• NP412.7 km
• CF4712.8 km
• CF4812.9 km
• NP1212.9 km
• NP713.7 km
• CF4615.2 km
• CF8215.2 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids