HP9 postcode district

Postcodes and sectors

554 of the district's 865 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 51.61015, -0.64020, which locates the district, not a building.

Companies registered in HP9

Companies House lists 3,370 companies with a registered office in HP9; 1,159 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 HP9

• Buckinghamshire
• South East
• Beaconsfield
• Seer Green
• Jordans
• Chalfont St Giles

Roads filed under HP9

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.

• Alastair Mews
• Amersham Road
• Assheton Road
• Aylesbury End
• Bagley Street
• Baldwin Road
• Baring Crescent
• Baring Road
• Barrards Way
• Barton Drive
• Bayne Hill
• Bayne Hill Close
• Beacon Close
• Bealings End
• Bearswood End
• Beeches Park
• Beech Lane
• Beechwood Road
• Bell Close
• Bellridge Place
• Berkley Road
• Berwick Close
• Blyton Close
• Bottom Lane
• Bowl Barrow Way
• Brindle Lane
• Broad Lane
• Brownswood Road
• Burgess Wood Grove
• Burgess Wood Road
• Burgess Wood Road South
• Burkes Close
• Burkes Crescent
• Burkes Road
• Burnham Avenue
• Burnham Road
• Burnham Yard
• Butlers Court Road
• Caledon Close
• Caledon Road
• Callingham Place
• Calumet
• Cambridge Road
• Campbell Drive
• Candlemas Lane
• Candlemas Mead
• Chacombe Place
• Chalfont Road
• Charsley Road
• Chartwell Gate
• Cherry Drive
• Cherry Tree Road
• Cherrywood Close
• Chesterton Green
• Chestnut Road
• Chiltern Hills Road
• Churchill Drive
• Church Road
• Clay Street
• Coat Wicks

Check an address in HP9

Check an address in HP9

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=HP9" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about HP9

What does an HP9 postcode tell you?

That the address lies in the HP9 district of the HP (Hemel Hempstead) postcode area, and the place OS Open Names most often lists first for its postcodes is Beaconsfield. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 554 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 HP9

• HP104.0 km
• HP85.8 km
• SL85.9 km
• SL96.0 km
• HP76.4 km
• HP157.3 km
• HP117.4 km
• HP137.4 km
• HP68.1 km
• SL28.6 km
• HP129.8 km
• SL710.3 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids