National Assembly for Wales Constituency Boundaries, December 2015

Wales is covered by digital vector boundaries for National Assembly constituencies as of December 2015. The dataset contains five boundary versions at different resolutions, from full extent to ultra-generalized, with file sizes ranging from 34 KB to 4 MB. It is provided by the Office for National Statistics and contains Ordnance Survey and ONS intellectual property rights.

Use Cases

• Map constituency boundaries for electoral analysis based on the provided vector geometries.
• Perform spatial analysis of Welsh political geography using the coastline-clipped boundary versions.
• Create simplified visualizations for web maps using the generalised (20m, 200m, 500m) boundary layers.

Strengths

• Provides five distinct boundary versions for different use cases, including full extent and coastline-clipped.
• Specific file sizes are listed for each version, ranging from 34 KB to 4 MB.
• Contains intellectual property rights information for both Ordnance Survey and ONS.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is specific to a single snapshot in time (December 2015) and may not reflect current boundaries.

Provenance

Source

Office for National Statistics

Collection Method

Digital vector boundaries likely derived from official electoral mapping.

Time Range

December 2015

Freshness

Last updated 2026-07-08 13:33:23.361253; freshness should be verified.

Geography

Wales