National Assembly for Wales Electoral Regions: Vector Boundaries from December 2015

Digital vector boundaries for the National Assembly for Wales Electoral Regions as of December 2015. The dataset contains multiple boundary resolutions, including full, generalised (20m), super generalised (200m), and ultra generalised (500m) versions, each 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 region boundaries based on the provided vector data.
• Performing spatial analysis of Welsh administrative units based on the multiple resolution levels.
• Integrating electoral geography into larger UK-wide mapping projects based on the standardized boundary formats.
• Creating simplified cartographic visualizations based on the generalised (20m, 200m, 500m) boundary versions.

Strengths

• Offers five distinct boundary resolutions, from full detail to ultra generalised (500m).
• Provides specific file sizes for each resolution, such as 23 KB for the ultra generalised version.
• Includes direct REST API URLs for ArcGIS INSPIRE View and Feature Download services.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The temporal coverage is fixed to a single snapshot from December 2015.
• Row count and specific feature attributes are unknown, which may limit suitability assessment.

Provenance

Source

Office for National Statistics

Collection Method

Likely digitized from official electoral cartography.

Time Range

December 2015

Freshness

Last updated 2026-07-08 13:33:20.817657; freshness should be verified.

Geography

Wales