OSNI 50K Boundaries: Northern Ireland Outline

OSNI Open Data provides a mid-scale vector polygon dataset representing the administrative outline of Northern Ireland. The dataset is published under an open government license and is available in multiple geospatial formats including ESRI Shapefile, GeoJSON, and KML. It is intended for use in desktop and web mapping applications.

Use Cases

• Creating base maps for Northern Ireland based on the official 1:50k scale outline.
• Performing spatial analysis of regional data using the defined administrative boundary.
• Integrating the NI outline into web mapping services (WMS) or desktop GIS software.

Strengths

• Published under the OGL-UK-3.0 open government license, facilitating reuse.
• Available in multiple standard geospatial formats (e.g., SHP, GeoJSON, KML).
• Sourced from the official mapping agency for Northern Ireland (OSNI/LPS).

Limitations

• Specific column names and attribute details are not provided in the metadata.
• The dataset's row count and file size are unknown, limiting an assessment of its granularity.
• The 'last updated' metadata shows a future date (2026-07-08), indicating a potential data entry error or system issue.

Provenance

Source

Land & Property Services (LPS)/Ordnance Survey of Northern Ireland (OSNI)

Collection Method

Published for open data via OpenDataNI.

Freshness

Last updated metadata indicates 2026-07-08, but this appears to be an anomaly or future date.

Geography

Northern Ireland