Identification

Title
Senedd constituency boundaries 2026
Abstract

Following the Senedd (Members and Elections) Act 2024 (the Act) the Democracy and Boundary Commission Cymru (DBCC) put forward recommendations from the 2026 review. 16 Senedd constituencies are formed by combining 2 contiguous UK Parliamentary constituencies. Each constituency will be represented by 6 members bringing the total number of Senedd members to 96.

These decisions will take effect automatically at the 2026 Senedd election.

© Democracy and Boundary Commission Cymru, [2025], licensed under the Open Government Licence

Licence
Open Government Licence for Public Sector Information (OGL)

Read more about this licence

Copyright:

None

Publication date
Type
Spatial data
Regions
Global
Approved
Yes
Published
Yes
Featured
No
Group
Geography & Technology

Information

Spatial extent
Projection system
EPSG:27700
Extension x0
146597.09375
Extension x1
355308.03125
Extension y0
164538.390625
Extension y1
395994.125

Features

Contact

Email
data@gov.wales
Organisation
Welsh Government
Department
Geography & Technology

References

Link online
/layers/geonode:senedd_final_2026
Metadata page
/layers/geonode:senedd_final_2026/metadata_detail

GeoJSON
Senedd constituency boundaries 2026.json
Excel
Senedd constituency boundaries 2026.excel
CSV
Senedd constituency boundaries 2026.csv
GML 3.1.1
Senedd constituency boundaries 2026.gml
GML 2.0
Senedd constituency boundaries 2026.gml
DXF
Senedd constituency boundaries 2026.dxf
OGC Geopackage
Senedd constituency boundaries 2026.gpkg
Zipped Shapefile
Senedd constituency boundaries 2026.zip

OWS endpoints

WMS
WFS