Output Areas (OA) Boundaries for England and Wales

Digital map files from the Office for National Statistics define the smallest census geography units in England and Wales. The data includes boundaries for Output Areas (OA) in multiple geospatial formats such as Shapefile, KML, and GeoJSON. It was last updated on 2026-07-08.

Use Cases

• Create choropleth maps for census statistics based on the defined OA boundaries.
• Perform spatial joins to aggregate point-level data to OA-level using the provided geographies.
• Develop location-based services or analyses that require the precise administrative boundaries of England and Wales.

Strengths

• Boundaries are provided in multiple standard geospatial formats (Shapefile, KML, GeoJSON, WMS, WFS).
• Data originates from the authoritative Office for National Statistics (ONS).
• Geographic coverage is explicitly defined as England and Wales.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Office for National Statistics (ONS)

Collection Method

Administrative data

Freshness

Last updated 2026-07-08 13:33:02.676750; freshness should be verified.

Geography

England and Wales