OSNI Open Data Largescale Boundaries: Northern Ireland Land Area Polygons, 2016

A 2016 polygon dataset representing the land area of Northern Ireland. The data was extracted from the Ordnance Survey of Northern Ireland (OSNI) Largescale database, topologically cleansed, and attributed to create a seamless dataset. It is published by Land & Property Services under the Open Government Licence.

Use Cases

• Create thematic maps of Northern Ireland based on the seamless polygon boundaries mentioned in the description.
• Perform spatial joins and analysis using the topologically cleansed land area data.
• Integrate boundary data into web mapping services using the provided ESRI REST or WMS endpoints.
• Develop commercial applications that incorporate Northern Irish geography, permitted by the Open Government Licence.

Strengths

• Data is topologically cleansed, creating a seamless dataset suitable for spatial analysis.
• Available in multiple geospatial formats (GEOJSON, KML, WMS, ESRI REST) for different use cases.
• Explicitly licensed under the Open Government Licence (OGL-UK-3.0), allowing commercial use with attribution.

Limitations

• Description metadata is limited; actual data quality and attribute details require manual inspection after download.
• Row count and file size are unknown, which may limit suitability assessment for large-scale processing.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Land & Property Services (LPS), derived from Ordnance Survey of Northern Ireland (OSNI) Largescale database.

Collection Method

Extracted, topologically cleansed, and attributed from the source database.

Time Range

2016

Freshness

Last updated 2026-07-08 13:32:57.271612; freshness should be verified.

Geography

Northern Ireland