Welsh Assembly Constituency Boundaries from December 2015

Digital vector boundaries for National Assembly for Wales Constituencies as at December 2015. The dataset contains five boundary versions at different resolutions and file sizes, from a 4 MB full-resolution extent to a 34 KB ultra-generalised version. It is provided by the Office for National Statistics and contains both Ordnance Survey and ONS Intellectual Property Rights.

Use Cases

• Mapping electoral constituencies for Wales based on the provided vector boundaries.
• Conducting spatial analysis of political representation using the coastline-clipped boundary versions.
• Creating simplified visualizations for web maps using the generalised (20m, 200m, 500m) boundary files.
• Integrating boundary data with other geospatial datasets via the provided ArcGIS REST services.

Strengths

• Provides five distinct boundary versions for different use cases, from full resolution to ultra generalised.
• Includes specific file sizes for each version, such as 4 MB for full resolution and 34 KB for ultra generalised.
• Offers multiple access methods including direct file downloads and ArcGIS REST services.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is from a specific snapshot in December 2015; boundary changes after this date are not included.

Provenance

Source

Office for National Statistics

Collection Method

Official digital vector boundaries from UK geospatial services.

Time Range

December 2015

Freshness

Last updated 2026-07-08 13:32:29.850582; freshness should be verified.

Geography

Wales