NP25 postcode district

Postcodes and sectors

577 of the district's 746 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 51.80258, -2.72435, which locates the district, not a building.

Companies registered in NP25

Companies House lists 1,255 companies with a registered office in NP25; 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 NP25

• Sir Fynwy
• Monmouthshire
• Wales
• Monmouth
• Trefynwy
• County of Herefordshire
• West Midlands
• Llandogo
• Forest of Dean
• Gloucestershire
• South West
• Lower Redbrook
• Trellech
• The Narth
• Manson
• Mitcheltroy Common
• Upper Redbrook
• The Hendre
• Dingestow
• Pen-twyn
• Crossway
• Penallt
• Kymin
• Mitchel Troy

Roads filed under NP25

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 Way
• Agincourt Road
• Agincourt Square
• Agincourt Street
• Alders Drive
• Almshouse Street
• Ancrehill Lane
• Ash Lane
• Auden Close
• Babington Close
• Badgers Dene
• Barn Lane
• Beacon Road
• Beaufort Road
• Beech Road
• Belle Etoile Drive
• Bell Lane
• Berryfield Close
• Berryfield Park
• Berryfield Rise
• Bigham Close
• Birches Road
• Blake Street
• Blestium Street
• Bolingbroke Close
• Bowen Gardens
• Brook Crescent
• Brook Estate
• Buchanan Close
• Buckholt View
• Burgage
• Carbonne Close
• Castle Close
• Castle Hill
• Catbrook Road
• Catherine Close
• Caxton View
• Chapel Close
• Charles Close
• Charles Road
• Chartist Rise
• Chaucer Way
• Chepstow Road
• Cherry Walk
• Chestnut Terrace
• Chippenhamgate Street
• Church Farm
• Church Street
• Cilgant Shelley
• Cilgant y Nant
• Cinderhill Street
• Claypatch Road
• Clearview
• Clos Arglwydd Russell
• Clos Babington
• Clos Bigham
• Clos Briallen
• Clos Harold
• Clos Hendre
• Clos Jordan

Check an address in NP25

Check an address in NP25

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=NP25" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about NP25

What does an NP25 postcode tell you?

That the address lies in the NP25 district of the NP (Newport) postcode area, and the place OS Open Names most often lists first for its postcodes is Monmouth. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 577 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 NP25

• GL167.7 km
• NP1514.0 km
• GL1514.0 km
• HR915.2 km
• GL1715.7 km
• GL1416.8 km
• NP1617.1 km
• NP720.0 km
• GL1321.9 km
• HR223.4 km
• NP2623.8 km
• NP424.1 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids