Lower Layer Super Output Areas: 2011 Census Boundaries for England and Wales

Digital vector boundaries for Lower Layer Super Output Areas (LSOAs) as of 31 December 2011 in England and Wales. The dataset contains four boundary versions, including full-resolution and generalised files, with file sizes ranging from 8 MB to 357 MB. It is provided by the Office for National Statistics and contains Ordnance Survey and ONS intellectual property rights.

Use Cases

• Create census data visualizations based on super generalised (200m) boundaries for web mapping.
• Perform spatial joins with other datasets based on the full-resolution LSOA boundaries.
• Analyze geographic patterns in England and Wales using the generalised (20m) clipped boundaries.
• Integrate administrative boundaries into GIS software for regional planning based on the provided vector data.

Strengths

• Provides four distinct boundary versions, including full-resolution and super generalised (200m) files.
• File sizes are specified, with the super generalised version being 8 MB, suitable for lightweight applications.
• Boundaries are provided for a specific reference date (31 December 2011).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is from 2011, which may limit analysis of recent demographic changes.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Office for National Statistics

Collection Method

Likely digitized and generalized from official Ordnance Survey mapping.

Time Range

As of 31 December 2011

Freshness

Last updated 2026-07-08 13:33:23.574506; freshness should be verified.

Geography

England and Wales