NN4 postcode district

Postcodes and sectors

980 of the district's 1,768 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 52.21385, -0.89948, which locates the district, not a building.

Companies registered in NN4

Companies House lists 5,196 companies with a registered office in NN4; 1,865 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 NN4

• West Northamptonshire
• East Midlands
• Northampton
• Collingtree
• Great Houghton
• Swan Valley

Roads filed under NN4

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.

• Abbey Road
• Aldwell Close
• Alton Street
• Ambridge Close
• Ansell Way
• Applebarn Close
• Archangel Road
• Archangel Square
• Arrow Head Road
• Ashbrow Road
• Ash Lane
• Ashpole Spinney
• Atterbury Way
• Augusta Avenue
• Avebury Way
• Aviemore Gardens
• Axe Head Road
• Azure Way
• Back Lane
• Badger Lane
• Baines Way
• Bakewell Close
• Balland Way
• Banbury Close
• Banbury Lane
• Bancroft Close
• Bancroft Way
• Bank View
• Barkers Lodge
• Barn Close
• Barn Corner
• Barnet Close
• Barnfield Way
• Barn Mews
• Barn Owl Close
• Basil Close
• Bassett Court
• Battalion Drive
• Battle Close
• Baulmsholme Close
• Baxter Court
• Bay Willow Crescent
• Beacon Court
• Beddoes Close
• Bedford Road
• Belfry Lane
• Belton Close
• Benjamin Square
• Bern Side
• Berry Lane
• Birch Close
• Bittern Street
• Blackberry Lane
• Blackwall Close
• Blackwell Hill
• Blackymore Lane
• Blanchard Close
• Bledlow Rise
• Blenheim Road
• Blisworth Close

Check an address in NN4

Check an address in NN4

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=NN4" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about NN4

What does an NN4 postcode tell you?

That the address lies in the NN4 district of the NN (Northampton) postcode area, and the place OS Open Names most often lists first for its postcodes is Northampton. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 980 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 NN4

• NN72.3 km
• NN13.2 km
• NN54.5 km
• NN25.6 km
• NN36.8 km
• NN1211.9 km
• NN612.7 km
• MK4614.9 km
• MK1915.6 km
• NN2916.7 km
• NN816.9 km
• MK1218.2 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids