Register of Geographic Codes: Definitive UK Statistical Geographies (December 2020)

The Register of Geographic Codes (RGC) is the definitive list of UK statistical geographies maintained by the Office for National Statistics (ONS). This version from December 2020 includes late updates for Leeds wards, parishes, and unparished areas. ONS coordinates the issuance of new codes and maintains relationships between active and archived code ranges on behalf of the Government Statistical Service.

Use Cases

• Standardize location-based data joins based on the definitive list of UK statistical geography codes.
• Track changes in administrative boundaries over time based on the relationship between active and archived codes.
• Support census and survey data analysis based on the official geographic framework maintained by ONS.

Strengths

• Definitive list of UK statistical geographies maintained by the Office for National Statistics.
• Includes specific updates for Leeds wards and parishes from December 2020.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Government Digital Service

Collection Method

Maintained and coordinated by the Office for National Statistics (ONS).

Time Range

December 2020 snapshot.

Freshness

Last updated 2025-08-11 07:50:44; freshness should be verified.

Geography

United Kingdom