Ordnance Survey of Northern Ireland

Ordnance Survey of Northern Ireland (OSNI) is the official producer of high quality, accurate and current geographic mapping data for Northern Ireland. 


Pointer address database

The Pointer address database is the common standard address for every property in Northern Ireland.

Place-names NI

Explore the origin and history of Northern Ireland and discover the location of place-names on the Place-names NI website.

Mapping contacts

Please see latest information below.

Mapping publications

Please use the link below to see Land & Property Services (LPS) Mapping publications.

Copyright publications

Land & Property Services (LPS) publishes information on Copyright and Intellectual Property Rights.

Related to Ordnance Survey of Northern Ireland

Access to information

How to request information from the Department of Finance including Freedom of Information (FOI) and the use of our Publication Scheme.

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