National Assembly for Wales Constituency Boundaries, December 2015

Five digital vector boundary resolutions for Welsh electoral constituencies, ranging from full detail to ultra-generalized 500m versions. This dataset, provided by the Office for National Statistics, contains both Ordnance Survey and ONS intellectual property rights. File sizes vary from 34 KB for the ultra-generalized version to 4 MB for the full-resolution boundaries.

Use Cases

• Create electoral maps based on the super-generalized 200m boundaries for web visualization.
• Perform spatial analysis of constituency demographics using the full-resolution clipped boundaries.
• Integrate boundary data into GIS systems for planning using the provided ArcGIS REST service URLs.

Strengths

• Offers five distinct resolution levels, from full 4 MB files to a 34 KB ultra-generalized version.
• Contains specific intellectual property rights information for Ordnance Survey and ONS.
• Provides direct REST service URLs for ArcGIS INSPIRE View and Feature Download services.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Freshness should be verified as the data reflects a snapshot from December 2015.

Provenance

Source

Office for National Statistics

Collection Method

Digital vector boundaries derived from official sources.

Time Range

December 2015

Freshness

Last updated 2026-07-08 13:33:17.737746; data reflects December 2015 boundaries.

Geography

Wales