HP17 postcode district

Postcodes and sectors

373 of the district's 903 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 51.77575, -0.88777, which locates the district, not a building.

Companies registered in HP17

Companies House lists 867 companies with a registered office in HP17; 32 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 HP17

• Buckinghamshire
• South East
• Haddenham
• Stone
• Little Kimble
• Dinton
• Great Kimble
• Ford
• Upton
• Ellesborough
• Butler's Cross
• Kingsey
• Bishopstone
• Kimble Wick
• Gibraltar
• Nash Lee
• Terrick
• Chalkshire
• Aston Sandford
• Aylesbury
• Coombe
• Sedrup
• Marsh
• Meadle

Roads filed under HP17

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.

• Alderson Way
• Anxey Way
• Aston Road
• Aylesbury Road
• Badgers Rise
• Baghill Lane
• Banks Road
• Barn Owl Lane
• Bayliss Meadow
• Beacon Close
• Belle Vue
• Biggs Lane
• Bishopstone
• Bishopstone Road
• Bittenham Close
• Bonnett Close
• Boot Lane
• Bridens Way
• Bridge Street
• Bristol Close
• Brogan Place
• Brook Meadow
• Brookside Lane
• Burch Mews
• Burgess Lane
• Butte Furlong
• Buttercup Crescent
• Cambridge Street
• Carwithen Close
• Chalkshire Road
• Chapel Road
• Chesterfield Close
• Chiltern Avenue
• Chiltern Close
• Church Hill
• Church Lane
• Churchway
• Cornflower Close
• Cottage Grounds
• Cottland Clay
• Cotts Field
• Coxon Close
• Crabtree Road
• Cradle Footpath
• Creslow Way
• Cricketers Way
• Croft Courtyard
• Cromhamstone
• Daisy Lane
• Darvill Road
• Dawes Lane
• Day Close
• Dollicot
• Donnington Row
• Dorset End
• Dovecote
• Dovecote Close
• Dover Lane
• Dubery Close
• Eldridge Lane

Check an address in HP17

Check an address in HP17

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=HP17" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about HP17

What does an HP17 postcode tell you?

That the address lies in the HP17 district of the HP (Hemel Hempstead) postcode area, and the place OS Open Names most often lists first for its postcodes is Haddenham. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 373 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 HP17

• HP216.5 km
• HP196.7 km
• HP277.2 km
• HP187.4 km
• HP207.5 km
• OX97.8 km
• OX398.5 km
• HP228.9 km
• HP1414.1 km
• HP1614.2 km
• HP2315.7 km
• OX4916.0 km
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• How a British address is written
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distance between the districts' centroids