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National legislatures are often called 'houses', 'senates' or 'chambers'.
The constituencies are the areas that members of the legislatures represent. They are described by electoral boundary files. Please tell us about these electoral boundary files.
Please be careful not to submit polling districts. Polling districts are the areas which define the catchment of a polling station and are usually smaller than the constituency.
Where constituencies are the same as administrative districts these can be accepted.
| Question | Answer | Comment |
|---|---|---|
| Available free online | Yes | |
| In an open format | Shapefile, GeoJSON, KML | |
| Whole country | Yes | |
| electoral_districts_exist | Yes | |
| Collected by government | Ordnance Survey of Northern Ireland (OSNI) | The current Westminster constituency boundaries for Northern Ireland were agreed by the Boundary Commission of Northern Ireland in 2008. The boundary files are produced by OSNI. They are also compiled into a UK-wide boundary dataset by ONS. |
| assembly_needed | Yes | |
| characteristics | Name and/or ID of constituency, Polygon | |
| location | https://www.opendatani.gov.uk/dataset/osni-open-data-la - OpenDataNI | |
| Available free of charge | Yes | |
| Available in bulk | Yes | |
| Up-to-date | Yes | The current boundaries for NI were last updated in 2008 but remain in use for the current term of Parliament. |
| Legislative terms present | 2017-19 | |
| Openly licenced | Yes | |
| licence_url | https://reference.data.gov.uk/id/open-government-licence | |
| Number of legislative bodies | Parliament of the United Kingdom |
Official source for Westminster parlimentary constituencies in Northern Ireland.