PO12 postcode district

Postcodes and sectors

1,070 of the district's 1,451 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 50.79786, -1.14163, which locates the district, not a building.

Companies registered in PO12

Companies House lists 1,867 companies with a registered office in PO12; 545 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 PO12

• Gosport
• Hampshire
• South East

Roads filed under PO12

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.

• Abingdon Close
• Admirals Walk
• Admiralty Close
• Adur Close
• Albemarle Avenue
• Albert Street
• Alecto Road
• Alencon Close
• Alexandra Street
• Allenby Road
• Alma Street
• Alphage Road
• Alvara Road
• Alvercliffe Drive
• Alver Road
• Amberley Road
• Amersham Close
• Anglesey Arms Road
• Anglesey Road
• Ann's Hill Road
• Anthony Grove
• Arden Close
• Arminers Close
• Armstrong Close
• Arundel Road
• Ashburton Road
• Ashby Place
• Ash Close
• Astra Walk
• Atkinson Close
• Avenue Court
• Avenue Road
• Avery Lane
• Bankside
• Barham Close
• Battenburg Road
• Battery Close
• Bay Road
• Beatty Drive
• Beaumont Court
• Bedford Street
• Beechcroft Road
• Beech Grove
• Behrendt Close
• Bemister's Lane
• Bentham Road
• Beryl Avenue
• Beryton Close
• Beryton Road
• Bevis Road
• Bittern Close
• Blackthorn Drive
• Blake Road
• Blenheim Gardens
• Boldens Road
• Bolton Drive
• Bournemouth Avenue
• Bramber Road
• Bramley Gardens
• Briar Close

Check an address in PO12

Check an address in PO12

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=PO12" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about PO12

What does a PO12 postcode tell you?

That the address lies in the PO12 district of the PO (Portsmouth) postcode area, and the place OS Open Names most often lists first for its postcodes is Gosport. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,070 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 PO12

• PO133.2 km
• PO13.7 km
• PO54.0 km
• PO25.0 km
• PO45.7 km
• PO166.0 km
• PO36.1 km
• PO147.1 km
• PO67.4 km
• PO338.7 km
• PO349.3 km
• PO1510.0 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids