PO20 postcode district

Postcodes and sectors

1,277 of the district's 1,960 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 50.78646, -0.78155, which locates the district, not a building.

Companies registered in PO20

Companies House lists 3,585 companies with a registered office in PO20; 892 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 PO20

• West Sussex
• South East
• Chichester
• Selsey
• East Wittering
• Arun
• Westergate
• Tangmere
• Birdham
• West Wittering
• Hunston
• Eastergate
• North Mundham
• West Itchenor
• Oving
• Runcton
• Almodington
• Sidlesham
• Norton
• Highleigh
• Fontwell
• Street End
• Earnley
• Merston

Roads filed under PO20

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.

• Abercorn Walk
• Acorn Close
• Acre Street
• Alandale Road
• Albion Road
• Allandale Close
• Almodington Lane
• Appledram Lane South
• Arnell Avenue
• Ascot Close
• Autumn Gate
• Avebury Close
• Aylwin Place
• Baggarley Close
• Baker Close
• Bankside
• Barncroft Close
• Barnes Close
• Barnett's Field
• Barnett Close
• Barnham Road
• Barn Road
• Barn Walk
• Baron Close
• Barton Way
• Batchmere Estate
• Batchmere Road
• Bayberry Drive
• Bayley Road
• Beach Gardens
• Beach Road
• Beacon Drive
• Beaufield Close
• Beech Avenue
• Beech Close
• Beggar's Lane
• Belle Meade Close
• Bell Lane
• Bennetts Close
• Berrybarn Lane
• Beverley Close
• Bine Close
• Birch Close
• Birches Close
• Birdham Road
• Bishops Road
• Bittern Way
• Blackberry Lane
• Blackbird Way
• Black House Lane
• Blackman Way
• Blackthorn Gardens
• Bognor Road
• Bonnar Close
• Bonnar Road
• Bookers Lane
• Bourne Court
• Boweries Road
• Bowley Lane
• Bowley Mead

Check an address in PO20

Check an address in PO20

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=PO20" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about PO20

What does a PO20 postcode tell you?

That the address lies in the PO20 district of the PO (Portsmouth) postcode area, and the place OS Open Names most often lists first for its postcodes is Selsey. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,277 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 PO20

• PO215.8 km
• PO195.8 km
• PO189.0 km
• PO229.5 km
• PO1012.7 km
• PO1113.7 km
• BN1815.0 km
• PO916.6 km
• BN1717.3 km
• PO419.7 km
• PO319.8 km
• BN1620.4 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids