OL3 postcode district

Postcodes and sectors

595 of the district's 738 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 53.55329, -2.01154, which locates the district, not a building.

Companies registered in OL3

Companies House lists 1,817 companies with a registered office in OL3; 277 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 OL3

• Oldham
• North West
• Uppermill
• Delph
• Dobcross
• Diggle
• Denshaw
• Grasscroft
• Wall Hill
• Slackcote
• Linfitts
• Carr
• Rough Knarr
• Old Tame
• Mossley
• Bleak Hey Nook
• Doctor Lane Head
• Grange
• Royton
• Failsworth

Roads filed under OL3

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.

• Abbey Road
• Abels Lane
• Ainley Wood
• Ainsbrook Avenue
• Alderman Close
• Alphin Close
• Ambrose Crescent
• Ammons Way
• Annisfield Avenue
• Armit Road
• Arthur's Lane
• Ashworth Gardens
• Back Lee Street
• Bagnall Close
• Baker's Lane
• Bakestones Avenue
• Bank Lane
• Bankside Avenue
• Bankside Close
• Barmeadow
• Beech Avenue
• Bentfield Gardens
• Berry Brow
• Berry Street
• Birch Road
• Bleak Hey Nook Lane
• Boarshurst Lane
• Boat Lane
• Bowler Way
• Bradbury's Lane
• Briarfield Road
• Bridge Street
• Brimmy Croft Lane
• Broadgate
• Broad Lane
• Brook Avenue
• Brooke View
• Brookhill Close
• Brook Lane
• Brownhill Lane
• Brun Lane
• Buckley Drive
• Buckley Street
• Buckton Close
• Burn Bank
• Butterhouse Lane
• Butterworth Way
• Butts Lane
• Carr Lane
• Castleshaw Top Bank
• Central Avenue
• Chapel Road
• Chapel Street
• Chew Brook Drive
• Chew Road
• Chew Vale
• Chew Valley Road
• Church Grove
• Church Lane
• Church Meadow

Check an address in OL3

Check an address in OL3

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=OL3" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about OL3

What does an OL3 postcode tell you?

That the address lies in the OL3 district of the OL (Oldham) postcode area, and the place OS Open Names most often lists first for its postcodes is Uppermill. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 595 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 OL3

• OL44.3 km
• OL54.3 km
• OL16.3 km
• OL26.9 km
• OL87.6 km
• SK157.7 km
• OL68.2 km
• OL98.9 km
• OL79.4 km
• SK169.9 km
• OL1610.3 km
• M3510.8 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids