Unique Street Reference Number

USRNs for England and Wales are published in the National Street Gazetteer (NSG) database, the authoritative source of information about streets in England and Wales.

The NSG is managed by GeoPlace,[1] a joint venture between the Local Government Association and Ordnance Survey (OS).

The USRN is available from the NSG and included in Ordnance Survey's OS MasterMap Highways Network product.

USRNs can also be found on the site Find My Street created by GeoPlace.

The Government Digital Service has mandated the UPRN and USRN[6] as "the public sector standard for referencing and sharing property and street information".