AL9 postcode district
AL9, in the AL (St Albans) postcode area, has 429 live and 189 terminated postcodes in the ONS Postcode Directory of August 2026, and OS Open Names files 145 roads under it.
| postcode area | AL (St Albans) |
|---|---|
| live postcodes | 429 |
| terminated postcodes | 189 |
| sectors | 3 |
| roads listed | 145 |
| companies registered | 1,982 |
| centroid | 51.74435, -0.19743 |
| directory release | 2026-08 |
Postcodes and sectors
429 of the district's 618 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 51.74435, -0.19743, which locates the district, not a building.
| sector | live | terminated |
|---|---|---|
| AL9 5 | 127 | 71 |
| AL9 6 | 112 | 31 |
| AL9 7 | 190 | 87 |
Companies registered in AL9
Companies House lists 1,982 companies with a registered office in AL9; 574 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 AL9
- Hertfordshire
- Eastern
- Welwyn Hatfield
- Hatfield
- Welham Green
- Brookmans Park
- Essendon
- North Mymms
- Woodside
- Wildhill
- West End
- East Hertfordshire
Roads filed under AL9
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.
- Abdale Lane
- Alderman Close
- Arm and Sword Lane
- Ash Close
- Batterdale
- Bedwell Avenue
- Bell Lane
- Bluebridge Avenue
- Blue Bridge Road
- Booths Close
- Bradmore Green
- Bradmore Lane
- Bradmore Way
- Brookmans Avenue
- Bulls Lane
- Bull Stag Green
- Burleigh Mead
- Bush Hall Lane
- Bushwood Close
- Calder Avenue
- Charkham Mews
- Chequers
- Church Lane
- Church Street
- Coningsby Close
- Cucumber Lane
- Dellsome Lane
- Dixons Hill Close
- Dixons Hill Road
- Dunham Mews
- East View
- Essendon Hill
- Fawn Court
- Fore Street
- Fox's Lane
- Foxes Lane
- Frowick Close
- George's Wood Road
- Glebe Close
- Glebe Cottages
- Golf Club Road
- Gould Close
- Great North Road
- Green Close
- Greenfield
- Green Street
- Greville Close
- Grove Place
- Grubbs Lane
- Hatfield Road
- Hawkshead Lane
- Hertford Road
- Heyford Way
- Highlands
- High Road
- Holloways Lane
- Holwell Lane
- Hornbeam Lane
- Huggins Lane
- Kentish Lane
all 145 roads
- Knolles Crescent
- Lodge Drive
- Love Lane
- Lowlands
- Low Road
- Lydia Mews
- Lysley Place
- Marshmoor Crescent
- Marshmoor Lane
- Meadow Close
- Merritt Walk
- Mill Green Lane
- Moffats Close
- Moffats Lane
- Mount Pleasant Close
- Mount Pleasant Lane
- Mymms Drive
- Nash Close
- New Cottages
- North Drive
- Oaklands Avenue
- Old Farmhouse Mews
- Old Hertford Road
- Oldings Corner
- Orm Court
- Park Close
- Park Meadow
- Park Street
- Park View
- Parsonage Lane
- Parsonage Road
- Peplins Close
- Peplins Way
- Pine Grove
- Pleasant Rise
- Pooleys Lane
- Puttocks Close
- Puttocks Drive
- Ramsey Close
- Rectory Close
- Salisbury Square
- School Close
- School Lane
- Shepherds Way
- Shrublands
- Sibthorpe Road
- Skimpans Close
- Somers Road
- Somers Square
- Sovereign Place
- Stag Green Avenue
- Station Close
- Station Road
- St Mary's Church Road
- Sunnyfield
- Sunset View
- Swanland Road
- The Broadway
- The Close
- The Courtyard
- The Drive
- The Gardens
- The Grove
- The Holdings
- The Long Ride
- The Ryde
- Tollgate Road
- Travellers Close
- Travellers Lane
- Upland Drive
- Vincenzo Close
- Warrengate Road
- Welham Close
- Welham Manor
- West End Lane
- Westfield
- Westland Drive
- Wildhill Road
- Wise's Lane
- Woodfield Lane
- Woodlands
- Woodside Lane
- A414
- A1000
- B1455
Check an address in AL9
The same road list through the API, from the outward code alone:
curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=AL9" \ -H "Authorization: Bearer $SPAW_KEY"
Common questions about AL9
- What does an AL9 postcode tell you?
- That the address lies in the AL9 district of the AL (St Albans) postcode area, and the place OS Open Names most often lists first for its postcodes is Hatfield. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 429 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 AL9
- AL103.0 km
- EN65.2 km
- AL75.9 km
- AL86.7 km
- AL47.5 km
- AL18.7 km
- EN79.5 km
- AL69.8 km
- SG139.9 km
- AL29.9 km
- WD710.0 km
- SG1410.0 km
- Every district
- How a British address is written
- Check any address
distance between the districts' centroids
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