Welsh National Assembly Electoral Region Boundaries, December 2015

Digital vector boundaries for the National Assembly for Wales Electoral Regions as of December 2015. The dataset contains five versions of the boundaries, including full-resolution and multiple generalised versions clipped to the coastline. It is provided by the Office for National Statistics and was last updated on the platform in July 2026.

Use Cases

• Mapping electoral constituencies for Wales based on the provided vector boundaries.
• Performing spatial analysis of electoral regions using the full-resolution or generalised boundary files.
• Integrating boundary data into geographic information systems for administrative planning.
• Creating visualizations of Welsh electoral geography using the ultra generalised (500m) version for simplified rendering.

Strengths

• Provides five distinct boundary versions, including full-resolution and four generalised levels (20m, 200m, 500m).
• Includes specific file sizes for each version, ranging from 23 KB to 3 MB.
• Contains both Ordnance Survey and ONS Intellectual Property Rights, indicating authoritative sources.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Office for National Statistics

Collection Method

Digital vector boundaries derived from authoritative sources, likely Ordnance Survey.

Time Range

December 2015

Freshness

Last updated 2026-07-08 13:32:32.810239; freshness should be verified.

Geography

Wales