# Share of neighbourhoods in Wales's most deprived 20%

The share of each council's neighbourhoods that are among the most deprived 20% of neighbourhoods in Wales, worked out by Open Index from the Welsh Index of Multiple Deprivation 2025 deciles.

Worked out by Open Index from the Welsh Index of Multiple Deprivation 2025 deciles.

## Facts

- Published by: Welsh Government
- Level of detail: Council
- Updates: Every few years
- History: Since 2025
- Licence: Open Government Licence 3.0
- Method: Worked out by Open Index from the Welsh Index of Multiple Deprivation 2025 deciles
- Levels: Council

## How it is worked out

The number of a council's neighbourhoods in deciles 1 and 2 of the Welsh Index of Multiple Deprivation 2025, divided by all its neighbourhoods. Deciles 1 and 2 are the 382 neighbourhoods ranked 1 to 382 of 1,917, which the Welsh Government calls the most deprived 20%. Each neighbourhood is counted in the council it sits in, and every council's count matches the Welsh Government's own local authority deprivation profiles.

## Periods

| Level | First | Latest | Periods |
| --- | --- | --- | --- |
| Council | 2025 | 2025 | 1 |

## Coverage

| Nation | Areas | With a figure |
| --- | --- | --- |
| England | 296 | 0 |
| Wales | 22 | 22 |
| Scotland | 32 | 0 |
| Northern Ireland | 11 | 0 |

England measures deprivation its own way. See the English Indices of Deprivation 2025.

Scotland measures deprivation its own way. See the Scottish Index of Multiple Deprivation 2020.

Northern Ireland measures deprivation its own way. See the Northern Ireland Multiple Deprivation Measure 2017.

## Gaps

- England measures deprivation its own way. See the English Indices of Deprivation 2025: 296 (Hartlepool, Middlesbrough, Redcar and Cleveland, Stockton-on-Tees, Darlington, Halton)
- Scotland measures deprivation its own way. See the Scottish Index of Multiple Deprivation 2020: 32 (Clackmannanshire, Dumfries and Galloway, East Ayrshire, East Lothian, East Renfrewshire, Na h-Eileanan Siar)
- Northern Ireland measures deprivation its own way. See the Northern Ireland Multiple Deprivation Measure 2017: 11 (Antrim and Newtownabbey, Armagh City, Banbridge and Craigavon, Belfast, Causeway Coast and Glens, Derry City and Strabane, Fermanagh and Omagh)

## Caveats

- This is the share of a council's neighbourhoods that are in deciles 1 and 2 of the Welsh Index of Multiple Deprivation, the most deprived 20% of neighbourhoods in Wales. It shows where the most deprived neighbourhoods are, not how deprived the council is overall.
- Open Index counts each council's neighbourhoods from the Welsh Government's published deciles. The counts match the Welsh Government's own local authority profiles, which round the share to a whole number.
- The indices describe areas, not people. Many people who are not deprived live in deprived neighbourhoods, and many deprived people live in neighbourhoods that are not.
- England, Wales, Scotland and Northern Ireland each measure deprivation their own way, so Open Index never ranks or compares them together.

## Example: Cardiff

25.7% of the neighbourhoods in Cardiff are among the most deprived 20% of neighbourhoods in Wales.
Among councils in Wales, that is the 6th highest of 22.
Worked out by Open Index from the Welsh Index of Multiple Deprivation 2025 deciles.

https://openindex.co.uk/cardiff

## Sources

### Welsh Index of Multiple Deprivation 2025

- Publisher: Welsh Government
- Licence: [Open Government Licence 3.0](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Edition: WIMD 2025 ranks
- Published: 27 November 2025
- Fetched: 15 October 2026
- Updates: irregular
- Credit: Source: Welsh Government, Welsh Index of Multiple Deprivation 2025. Contains public sector information licensed under the Open Government Licence v3.0.
- Publisher's page: https://www.gov.wales/welsh-index-multiple-deprivation-2025-series

## Use it

- [The map](https://openindex.co.uk/map/most-deprived-20-wales)
- [Ranking](https://openindex.co.uk/rankings/most-deprived-20-wales/wales)
- Download (Council): https://data.openindex.co.uk/s/2026.10.10/downloads/layers/wimd-2025-most-deprived-20-share/council.csv
- API: https://openindex.co.uk/v1/layers/wimd-2025-most-deprived-20-share

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/sources/most-deprived-20-wales.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

- Source: Welsh Government, Welsh Index of Multiple Deprivation 2025. Contains public sector information licensed under the Open Government Licence v3.0.
- Worked out by Open Index from the Welsh Index of Multiple Deprivation 2025 deciles.

Snapshot 2026.10.10. The HTML page: https://openindex.co.uk/sources/most-deprived-20-wales