This file contains the National Statistics Postcode Lookup (NSPL) for the United Kingdom as at November 2025 in Comma Separated Variable (CSV) and ASCII text (TXT) formats. To download the zip file click the Download button. The NSPL relates both current and terminated postcodes to a range of current statutory geographies via ‘best-fit’ allocation from the 2021 Census Output Areas (national parks and Workplace Zones are exempt from ‘best-fit’ and use ‘exact-fit’ allocations) for England, Wales, Scotland and Northern Ireland. It supports the production of area-based statistics from postcoded data. The NSPL is produced by ONS Geography, who provide geographic support to the Office for National Statistics (ONS) and geographic services used by other organisations. The NSPL is issued quarterly. (File size - 178 MB).
This file first published on 25 November 2025 is updated on 9 December 2025 to correct ward allocation of OA21 (E00107679) being reassigned to Ward (WD25) (E05011642) instead of E05011648.
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If you have downloaded this product before this date, please check your version and download the updated product. For further assistance, please don’t hesitate to contact ons.geography@ons.gov.uk..
