National Assembly for Wales Constituency Boundaries from December 2015

December 2015 digital vector boundaries for National Assembly for Wales Constituencies, provided by the Office for National Statistics. The dataset contains five boundary versions at different resolutions, from full resolution to ultra generalised (500m), clipped to the coastline. It contains both Ordnance Survey and ONS Intellectual Property Rights.

Use Cases

• Map constituency boundaries for electoral analysis based on the provided vector data.
• Perform spatial joins with demographic data using the ultra generalised (500m) boundaries for simplified analysis.
• Visualize the extent of Welsh constituencies relative to the coastline using the clipped boundary versions.
• Compare boundary detail and file size trade-offs across the five available resolution levels.

Strengths

• Provides five specific boundary versions, including ultra generalised (500m) at 34 KB for lightweight use.
• Contains direct download links to ArcGIS REST services for programmatic access.
• Explicitly states the snapshot date (December 2015) for temporal context.

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.
• Data may reflect geographic/temporal bias inherent to uk_data, representing a single point in time.

Provenance

Source

Office for National Statistics

Collection Method

Likely digitized from official electoral boundary definitions.

Time Range

December 2015

Freshness

Last updated 2026-07-08 13:32:46.725883; freshness should be verified.

Geography

Wales