Register of Geographic Codes: Definitive UK Statistical Geographies (June 2021)

ONS maintains the definitive list of UK statistical geographies, coordinating new codes and maintaining relationships between active and archived code ranges. The Register of Geographic Codes (RGC) for June 2021 is a key product for the Government Statistical Service. It should be used in conjunction with the separately available Code History Database.

Use Cases

• Mapping demographic statistics based on definitive UK geographic boundaries.
• Joining datasets using the authoritative statistical geography codes.
• Tracking changes in administrative areas based on the relationship between active and archived codes.

Strengths

• Maintained by the Office for National Statistics (ONS) as the definitive authority.
• Designed for use with a separate Code History Database for tracking changes.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Government Digital Service

Collection Method

Maintained and coordinated by the Office for National Statistics (ONS) on behalf of the Government Statistical Service.

Time Range

June 2021

Freshness

Last updated 2025-08-11 07:50:47; freshness should be verified.

Geography

United Kingdom