OSNI Open Data - 50K Boundaries - District Electoral Areas (1993)
type: Dataset
description: OSNI 50k DEAs as they were from 1993. Published here for OpenData. By download or use of this dataset you agree to abide by the LPS Open Government Data Licence. Please Note for Open Data NI Users: Esri Rest API is not Broken, it will not open on its own in a Web Browser but can be copied and use...
description: Boundary dataset from Ordnance Survey Northern Ireland (OSNI) showing the District Electoral Areas (DEAs) as they existed in 1993, mapped at 1:50,000 scale. Published as open data by Land & Property Services (LPS) under the LPS Open Government Data Licence. The dataset is made available for download and via an Esri REST API endpoint, which does not render directly in a web browser but can be accessed programmatically or copied into GIS software. It provides a historical reference for administrative boundary geography in Northern Ireland.
landing page: https://data.gov.uk/dataset/osni-open-data-50k-boundaries-district-electoral-areas-19936
spatial: GBR
access rights: PUBLIC
distribution: CSV
distribution: OGC WMS
distribution: ArcGIS GeoService
distribution: KML
distribution: GeoJSON
distribution: Shapefile
issued: 2026-07-09T09:37:49.132Z
modified: 2026-08-23T09:12:18.378Z
is part of: catalog

CSV
type: Distribution
access URL: https://osni-spatialni.opendata.arcgis.com/api/download/v1/items/a6590a6f628b4c8e922dcbc24f97bf4b/csv
download URL: https://osni-spatialni.opendata.arcgis.com/api/download/v1/items/a6590a6f628b4c8e922dcbc24f97bf4b/csv
media type: https://www.iana.org/assignments/media-types/text/csv
format: CSV

OGC WMS
type: Distribution
access URL: https://services.spatialni.gov.uk/opendata/services/OSNIVector/OSNIOpenData_Boundaries_50K/MapServer/WMSServer
media type: vnd.ogc.wms xml
format: wms

ArcGIS GeoService
type: Distribution
access URL: https://services.spatialni.gov.uk/opendata/rest/services/OSNIVector/OSNIOpenData_Boundaries_50K/MapServer/4
download URL: https://services.spatialni.gov.uk/opendata/rest/services/OSNIVector/OSNIOpenData_Boundaries_50K/MapServer/4
media type: https://www.iana.org/assignments/media-types/application/json
format: JSON

KML
type: Distribution
access URL: https://osni-spatialni.opendata.arcgis.com/api/download/v1/items/a6590a6f628b4c8e922dcbc24f97bf4b/kml
download URL: https://osni-spatialni.opendata.arcgis.com/api/download/v1/items/a6590a6f628b4c8e922dcbc24f97bf4b/kml
media type: vnd.google-earth.kml+xml
format: KML

GeoJSON
type: Distribution
access URL: https://osni-spatialni.opendata.arcgis.com/api/download/v1/items/a6590a6f628b4c8e922dcbc24f97bf4b/geojson
download URL: https://osni-spatialni.opendata.arcgis.com/api/download/v1/items/a6590a6f628b4c8e922dcbc24f97bf4b/geojson
media type: vnd.geo+json
format: GEOJSON

Shapefile
type: Distribution
access URL: https://osni-spatialni.opendata.arcgis.com/api/download/v1/items/a6590a6f628b4c8e922dcbc24f97bf4b/shapefile
download URL: https://osni-spatialni.opendata.arcgis.com/api/download/v1/items/a6590a6f628b4c8e922dcbc24f97bf4b/shapefile
media type: https://www.iana.org/assignments/media-types/application/zip
format: SHP