IP20 postcode district

Postcodes and sectors

323 of the district's 395 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 52.40618, 1.31904, which locates the district, not a building.

Companies registered in IP20

Companies House lists 527 companies with a registered office in IP20; 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 IP20

• Eastern
• South Norfolk
• Norfolk
• Harleston
• Suffolk
• Mid Suffolk
• East Suffolk
• Metfield
• Wortwell
• Alburgh Street
• Denton
• Alburgh
• Mendham
• St Cross South Elmham
• Needham
• Starston
• Withersdale Street
• St Margaret South Elmham
• Redenhall
• Great Green
• Homersfield
• Low Street
• Metfield Common
• St Nicholas South Elmham

Roads filed under IP20

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.

• Allthorpe Road
• Back Lane
• Badger Close
• Barley Close
• Beaufort Way
• Beck View
• Blackbird Way
• Blenheim Row
• Brames Lane
• Briar Road
• Briar Walk
• Bridge Close
• Broad Road
• Broad Street
• Brook Lane
• Bullfinch Drive
• Bullock Fair Close
• Bungaygrave Lane
• Bunns Lane
• Burnthouse Lane
• Burntoak Lane
• Candler's Lane
• Candler's Mews
• Carver Way
• Chaffinch Mews
• Cherrywood
• Christmas Lane
• Church Close
• Church Hill
• Church Lane
• Church Road
• Church Street
• Church View
• Clintergate Road
• Cobblers Crescent
• Constable Court
• Cook's Lane
• Cranes Meadow
• Croft Close
• Cross Road
• Cuckoo Lane
• Danacre Road
• Darrow Green Road
• Denny's Hill
• Denton Road
• Dicky Hill
• Doune Way
• Dove Close
• Downs Farm Lane
• Elizabeth Walk
• Everson's Lane
• Exchange Street
• Flixton Road
• Foxes Lane
• Fox Hill
• Frere Road
• Fressingfield Road
• Fuller Road
• Gawdy Close
• Glamis Court

Check an address in IP20

Check an address in IP20

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=IP20" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about IP20

What does an IP20 postcode tell you?

That the address lies in the IP20 district of the IP (Ipswich) postcode area, and the place OS Open Names most often lists first for its postcodes is Harleston. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 323 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 IP20

• IP217.2 km
• NR359.9 km
• NR1511.4 km
• IP1914.0 km
• IP2317.3 km
• NR1417.8 km
• NR3418.3 km
• IP2218.5 km
• NR1619.6 km
• IP1723.1 km
• NR1823.2 km
• NR423.3 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids