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ONS Postcode Directory (November 2025) User Guide

This User Guide contains information about the ONSPD including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data quality and limitations and...

National Statistics Postcode Lookup (May 2017) User Guide

This User Guide contains information about the NSPL including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data...

National Statistics Postcode Lookup (February 2017) User Guide

This User Guide contains information about the NSPL including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data...

National Statistics Postcode Lookup (November 2016) User Guide

This User Guide contains information about the NSPL including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data...

National Statistics UPRN Lookup (Census 2021) (August 2022) User Guide

This User Guide contains information about the NSUL including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data...

Standard Area Measurements (2020) User Guide

This document is the Standard Area Measurements (2020) User Guide. It provides information regarding the Standard Area Measurements (SAM) products including: types of measurement; data tolerance,...

Standard Area Measurements (2021) User Guide

This document is the Standard Area Measurements (2021) User Guide. It provides information regarding the Standard Area Measurements (SAM) products including: types of measurement; data tolerance,...

ONS UPRN Directory (November 2024) (Epoch 114) User Guide

This User Guide contains information about the ONSUD including: directory content; data currency; the methodology for assigning areas to postcodes; data...

ONS UPRN Directory (May 2025) (Epoch 118) User Guide

This User Guide contains information about the ONSUD including: directory content; data currency; the methodology for assigning areas to postcodes; data...

Standard Area Measurements (2022) User Guide

This document is the Standard Area Measurements (2022) User Guide. It provides information regarding the Standard Area Measurements (SAM) products including: types of measurement; data tolerance,...

Standard Area Measurements (2025) User Guide

This document is the Standard Area Measurements (2025) User Guide. It provides information regarding the Standard Area Measurements (SAM) products including: types of measurement; data tolerance,...

Standard Area Measurements (2024) User Guide

This document is the Standard Area Measurements (2024) User Guide. It provides information regarding the Standard Area Measurements (SAM) products including: types of measurement; data tolerance,...

ONS Postcode Directory (August 2016) User Guide Version 2

This updated User Guide contains information about the ONSPD including: directory content; data currency; the methodology for assigning areas to postcodes; data...

National Statistics Postcode Lookup (August 2025) User Guide

This User Guide contains information about the NSPL including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data quality and limitations and...

National Statistics Postcode Lookup (November 2025) User Guide

This User Guide contains information about the NSPL including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data quality and limitations and...

National Statistics Postcode Lookup 2021 Census (August 2024) User Guide

This User Guide contains information about the NSPL including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data quality and limitations and...

National Statistics Postcode Lookup 2011 Census (May 2024) User Guide

This User Guide contains information about the NSPL including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data quality and limitations and...

National Statistics Postcode Lookup 2021 Census (May 2024) User Guide

This User Guide contains information about the NSPL including: directory content; data currency; the methodology for assigning areas to postcodes; data formats; data quality and limitations and...

Rural-Urban Classification User Guide (2021)

The user guide is a high level summary of the 2021 Rural Urban Classification methodology, including a visual representation of the method, high level summary statistics and a brief explanation of...

A Beginner's Guide to UK Geography (2023)

This updated guide is a simple tour of the UK geographical areas used in National Statistics work.  You can use it to get basic facts on each type of area as well as more specialist information.