Welsh Assembly Constituency Boundaries, December 2015 Generalised Clipped

Five versions of electoral boundaries for the National Assembly for Wales, ranging from full resolution to ultra generalised (500m). This dataset contains both Ordnance Survey and ONS Intellectual Property Rights and was last updated on the platform in July 2026. The boundaries are clipped to the coastline at the Mean High Water mark.

Use Cases

• Mapping constituency-level administrative regions based on the provided vector boundaries.
• Analyzing electoral geography using the coastline-clipped generalised boundaries.
• Integrating boundary data into spatial models for the December 2015 electoral period.

Strengths

• Provides five distinct boundary resolutions, from 4 MB full resolution to 34 KB ultra generalised.
• Includes specific download file sizes for each version, allowing for informed selection.
• Contains direct REST URLs for ArcGIS INSPIRE View and Feature Download services.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data reflects a specific snapshot from December 2015; boundaries may have changed since.

Provenance

Source

Office for National Statistics

Collection Method

Digital vector boundaries derived from Ordnance Survey and ONS data.

Time Range

December 2015

Freshness

Last updated 2026-07-08 13:32:24.461744; freshness should be verified

Geography

Wales