IP31 postcode district

Postcodes and sectors

793 of the district's 929 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 52.29022, 0.83516, which locates the district, not a building.

Companies registered in IP31

Companies House lists 1,429 companies with a registered office in IP31; 174 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 IP31

• Suffolk
• Eastern
• West Suffolk
• Mid Suffolk
• Thurston
• Stanton
• Ixworth
• Great Barton
• Badwell Ash
• Walsham le Willows
• Norton
• Pakenham
• Barningham
• Bardwell
• Ingham
• Honington
• Troston
• Great Livermere
• Long Thurlow
• Coney Weston
• Bury St Edmunds
• Upthorpe
• Stanton Street
• Fornham St Martin

Roads filed under IP31

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 Close
• Anglesey Place
• Ashfield Gardens
• Ashfield Hill
• Ashfield Road
• Aspen Close
• Austin Close
• Back Lane
• Bacon Close
• Badwell Road
• Baileypool Lane
• Barber's Lane
• Bar Close
• Bardwell Road
• Barleyfields
• Barningham Road
• Barrell's Road
• Barton Bottom
• Barton Hamlet
• Barton Hill
• Barton Road
• Bartram Close
• Bassett Road
• Beauford Road
• Beeches Close
• Beech Park
• Belhaven Road
• Bennett Close
• Bertuna Close
• Birch Gardens
• Birch Road
• Bird's Road
• Birds Croft
• Bishops Croft
• Blackbird Close
• Blenheim Drive
• Bloomfield Close
• Bobby's Way
• Borley Close
• Bracken Row
• Brand Road
• Braziers Lane
• Briarbank Close
• Brier Lane
• Broad Meadow
• Broadway
• Buckles Field
• Bull Road
• Bunbury Avenue
• Bury Drift
• Bury Lane
• Bury Road
• Butter Cup View
• Callowhill Lane
• Capel Close
• Capell Walk
• Carpenter Close
• Catchpole Way
• Catlin Close
• Cavendish Close

Check an address in IP31

Check an address in IP31

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=IP31" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about IP31

What does an IP31 postcode tell you?

That the address lies in the IP31 district of the IP (Ipswich) postcode area, and the place OS Open Names most often lists first for its postcodes is Thurston. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 793 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 IP31

• IP328.8 km
• IP308.9 km
• IP3310.1 km
• IP2415.4 km
• IP1416.2 km
• IP2916.3 km
• IP2217.5 km
• IP2319.5 km
• IP2821.4 km
• IP2723.2 km
• NR1625.1 km
• IP625.6 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids