OSNI 50K Boundaries: Northern Ireland District Electoral Areas (1993)

OSNI 50k DEAs represent the District Electoral Area boundaries for Northern Ireland as they were in 1993. This geospatial dataset is published as open data under the LPS Open Government Data Licence. The data is available in multiple formats, including ESRI Shapefile, GeoJSON, and KML, for use in desktop and web mapping applications.

Use Cases

• Historical boundary analysis based on the 1993 snapshot of electoral districts.
• Creating thematic maps using the provided geospatial vector boundaries.
• Integrating historical administrative units into Geographic Information Systems (GIS) for regional planning.
• Studying changes in electoral geography by comparing this 1993 dataset with later boundary revisions.

Strengths

• Provides a specific historical snapshot from the year 1993.
• Published under an open government licence (OGL-UK-3.0), facilitating reuse.
• Available in multiple standard geospatial formats (e.g., SHP, GeoJSON, KML).

Limitations

• Key metadata such as row count, column names, and dataset size are unknown across all sources.
• The data represents a single historical point and may not reflect current boundaries.
• One source lists a future 'last updated' date (2026-07-08), indicating potential metadata inconsistency.

Provenance

Source

OpenDataNI (Land & Property Services - LPS)

Collection Method

Likely digitized from official OSNI (Ordnance Survey of Northern Ireland) cartographic sources.

Time Range

1993

Freshness

2026-07-08 13:32:36.944201

Geography

Northern Ireland