OSNI Open Data - Largescale Boundaries - NI Outline

The OSNI Largescale NI Outline is a polygon dataset consisting of the land area of Northern Ireland. The data has been derived from OSNI Largescale and has been topologically cleansed and attributed to create a seamless dataset.

Data and Resources

ShapefileZIP
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Additional Info

Field	Value
Last Updated	November 18, 2025, 12:15 (UTC)
Created	November 18, 2025, 12:15 (UTC)