National Assembly for Wales Electoral Regions: 2015 Generalised Boundaries

Digital vector boundaries define the five National Assembly for Wales Electoral Regions as of December 2015. The dataset provides multiple resolution versions, from full-resolution (2-3 MB) to ultra-generalised (23 KB), each clipped to the Mean High Water coastline. It contains intellectual property rights from both the Ordnance Survey and the Office for National Statistics.

Use Cases

• Mapping election results based on the official 2015 electoral region geography.
• Performing spatial joins for demographic data analysis using the provided vector boundaries.
• Creating simplified base maps for web visualization using the 20m, 200m, or 500m generalised versions.
• Constituting electoral region extents for legal or administrative reference, including offshore islands where applicable.

Strengths

• Provides five distinct geometric resolutions, with specific file sizes ranging from 23 KB to 3 MB, catering to different use cases.
• Contains intellectual property from two authoritative UK sources: Ordnance Survey and the Office for National Statistics.
• Offers direct access via INSPIRE-compliant ArcGIS REST services for viewing and feature download.

Limitations

• Metadata is incomplete; specific column names, row counts, and total dataset size are not provided.
• The 'last updated' metadata date (2026-07-08) is a future date, indicating a potential system error or placeholder value.
• The dataset is static, representing a single snapshot from December 2015 and does not reflect subsequent boundary changes.

Provenance

Source

Office for National Statistics, incorporating Ordnance Survey data.

Collection Method

Official digital vector boundaries produced for statutory purposes.

Time Range

December 2015

Freshness

2026-07-08 13:33:29.257711 (Note: This is a future date, suggesting a metadata error)

Geography

Wales, including offshore islands; boundaries are clipped to the Mean High Water coastline.