County Boundaries from Northern Ireland, Topologically Cleansed

OSNI Large-scale boundaries provide a seamless polygon dataset of county administrative divisions in Northern Ireland. The data has been extracted from the Ordnance Survey Northern Ireland database, topologically cleansed, and attributed for consistency. This service is published under the LPS Open Government Data Licence.

Use Cases

• Create regional maps based on county boundary polygons.
• Perform spatial joins for demographic analysis based on administrative units.
• Develop location-based services using the topologically cleansed geometry.
• Conduct jurisdictional analysis for policy or service delivery based on county divisions.

Strengths

• Data has been topologically cleansed to ensure geometric consistency.
• Published as a seamless dataset, likely reducing edge-matching errors.
• Available in multiple geospatial formats including ESRI SHAPE, GEOJSON, and KML.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.
• Row count is unknown, which may limit suitability assessment for large-scale analysis.

Provenance

Source

Ordnance Survey Northern Ireland (OSNI)

Collection Method

Extracted from OSNI Large-scale database, then topologically cleansed and attributed.

Time Range

null

Freshness

null

Geography

Northern Ireland