IP4 postcode district

Postcodes and sectors

946 of the district's 1,227 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 52.06042, 1.18022, which locates the district, not a building.

Companies registered in IP4

Companies House lists 1,675 companies with a registered office in IP4; 92 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 IP4

• Suffolk
• Eastern
• Ipswich
• East Suffolk
• Kesgrave

Roads filed under IP4

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.

• Aberdeen Way
• Aberfoyle Close
• Adelaide Road
• Aldeburgh Gardens
• Alexandra Road
• Allington Close
• Alma Close
• Angel Lane
• Angus Close
• Argyle Street
• Arthur's Terrace
• Ashmere Grove
• Audley Grove
• Ayr Road
• Bank Road
• Bartholomew Street
• Belgrave Close
• Belle Vue Road
• Belvedere Road
• Bent Lane
• Berkeley Close
• Beverley Road
• Bildeston Gardens
• Bixley Drive
• Bixley Lane
• Blackfriars Court
• Bladen Drive
• Blair Close
• Blanche Street
• Bloomfield Street
• Bolton Lane
• Bond Street
• Borrowdale Avenue
• Boston Road
• Braeburn Close
• Bramley Chase
• Bramley Hill
• Bransby Gardens
• Brettenham Crescent
• Brisbane Road
• Bristol Road
• Britannia Road
• Broadlands Way
• Bromeswell Road
• Brookhill Way
• Brunswick Road
• Burnham Close
• Butterfly Gardens
• Byford Walk
• Caithness Close
• Camberley Road
• Canberra Close
• Carlton Way
• Carr Street
• Cauldwell Avenue
• Cauldwell Hall Road
• Cemetery Lane
• Cemetery Road
• Chancellor Walk
• Chartwell Close

Check an address in IP4

Check an address in IP4

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=IP4" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about IP4

What does an IP4 postcode tell you?

That the address lies in the IP4 district of the IP (Ipswich) postcode area, and the place OS Open Names most often lists first for its postcodes is Ipswich. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 946 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 IP4

• IP32.2 km
• IP12.9 km
• IP23.6 km
• IP54.5 km
• IP86.9 km
• IP107.7 km
• IP98.3 km
• IP69.4 km
• IP1213.5 km
• CO1115.0 km
• IP1115.0 km
• CO1215.2 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids