UK Output Area to 1991 Ward Lookup Table for Census Aggregation

A best-fit lookup table linking Output Areas to 1991 wards, enabling the aggregation of Census Area Statistics. The data is administrative and published by the UK's Office for National Statistics (ONS). It was last updated on 2026-07-08 and covers England.

Use Cases

• Aggregate modern census results to 1991 ward boundaries based on the best-fit lookup.
• Conduct longitudinal demographic studies by linking data across different administrative geographies.
• Analyze historical population distributions in England using a consistent 1991 ward framework.

Strengths

• Published by the authoritative Office for National Statistics (ONS).
• Enables linkage between two key UK administrative geographies (Output Areas and 1991 wards).
• License is specified as OGL-UK-3.0, indicating open government terms.

Limitations

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

Provenance

Source

Office for National Statistics (ONS)

Collection Method

Administrative data, best-fit geospatial lookup.

Freshness

Last updated 2026-07-08 13:33:00.937629; freshness should be verified.

Geography

England