Lower Layer Super Output Areas: 2001 Clipped Boundaries for England and Wales

December 2001 digital vector boundaries for Lower Layer Super Output Areas (LSOAs) in England and Wales. The dataset contains three boundary versions: full resolution (extent of the realm), full resolution clipped to the coastline, and a generalised (20m) version clipped to the coastline. Contains both Ordnance Survey and Office for National Statistics Intellectual Property Rights.

Use Cases

• Mapping and visualizing small-area administrative geography based on the provided vector boundaries.
• Joining census or socio-economic data to LSOA polygons for spatial analysis.
• Performing coastal boundary analysis using the clipped-to-coastline versions.
• Creating generalised maps for publication using the 20m generalised boundary files.

Strengths

• Provides three specific boundary versions: full resolution (extent and clipped) and a 20m generalised version.
• File sizes are explicitly listed, with the generalised version being 87 MB for easier handling.
• Contains authoritative intellectual property from Ordnance Survey and the Office for National Statistics.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data reflects the geographic and administrative state as of a single date in 2001.

Provenance

Source

Office for National Statistics

Time Range

As at 31 December 2001

Freshness

Last updated 2026-07-08 13:32:23.487828; freshness should be verified.

Geography

England and Wales