Address Lookup API / AddressBase Core

AddressBase Core from Ordnance Survey

The AddressBase Core dataset provides 33 million live address records with coordinates and UPRNs for England, Wales and Scotland. Use Postcoder to gain access to the latest data through a simple API.

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Key features of AddressBase Core

33 million address records
Every home and business address across England, Wales and Scotland
Weekly updates
So you can always be sure you have the very latest address information
Address coordinates and grid references
AddressBase Core provides accurate locations for every address
Key identifiers
Records include UPRN, UDPRN and a number of other key identifiers
Property classifications
Quickly identify properties from residential to commercial and more

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Address coordinates

AddressBase Core provides accurate locations for every address in the form of grid references and ETRS89 coordinates.

Easting and northings
Latitude and longitude

Weekly updates

AddressBase Core is updated weekly by Ordnance Survey, so you can always be sure you have the very latest address information.

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Easy cross-referencing

Each record includes the UPRN, the UDPRN and a number of other key identifiers to help you locate, match and gain insights from other location datasets.

UPRN
Unique Property Reference Number
UDPRN
Unique Delivery Point Reference Number
USRN
Unique Street Reference Number
TOID
Topographic Identifier
GSS
Government Statistical Service Code

AddressBase Core - UPRN: Unique Property Reference Number

AddressBase Core - UDPRN: Unique Delivery Point Reference Number

AddressBase Core - USRN: Unique Street Reference Number

AddressBase Core - TOID:Topographic Identifier

AddressBase Core - GSS: Government Statistical Service Code

Authoritative data

AddressBase Core gets most of its addressing information from Local Authorities, who have a legal responsibility to capture and maintain accurate address data for Great Britain.

33m

Addresses