National Assembly for Wales Electoral Regions: December 2015 Vector Boundaries

Five vector boundary resolutions for National Assembly for Wales Electoral Regions, ranging from full extent to ultra-generalized 500m. The Office for National Statistics provides this data under the OGL-UK-3.0 license. The dataset was last updated on 2026-07-08.

Use Cases

• Create electoral maps based on the full-resolution boundaries extending to the Mean Low Water mark.
• Perform spatial analysis using the generalised (20m) boundaries for faster processing.
• Integrate boundary data into web mapping services using the provided ArcGIS REST feature service URLs.
• Compare different coastline representations using the full extent versus clipped (Mean High Water mark) boundary versions.

Strengths

• Offers five distinct boundary resolutions, from 2 MB full extent to 23 KB ultra generalised (500m).
• Contains both Ordnance Survey and ONS Intellectual Property Rights, indicating authoritative sources.
• Provides direct REST service URLs for INSPIRE View, Feature Download, and a standard ArcGIS Feature Server.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The description does not specify the number of electoral regions or the exact geographic coordinate system.
• Last updated 2026-07-08 13:32:43.084557; freshness should be verified for current applications.

Provenance

Source

Office for National Statistics

Collection Method

Digital vector boundaries derived from authoritative mapping sources.

Time Range

December 2015

Freshness

Last updated 2026-07-08 13:32:43.084557

Geography

Wales