# Most and fewest people in radon Affected Areas: places in Wales (2022)

Pembrokeshire was the most people in radon Affected Areas of Wales’s 22 councils in 2022 (people in radon Affected Area squares 100%).

Blaenau Gwent was the fewest people in radon Affected Areas (51%). The middle council, Monmouthshire, had 88%.

Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas.

| Rank | Area | People in radon Affected Area squares |
| --- | --- | --- |
| 1 | [Pembrokeshire](https://openindex.co.uk/pembrokeshire) | 100% |
| 2 | [Ceredigion](https://openindex.co.uk/ceredigion) | 98% |
| =3 | [Torfaen](https://openindex.co.uk/torfaen) | 96% |
| =3 | [Wrexham](https://openindex.co.uk/wrexham) | 96% |
| =5 | [Conwy](https://openindex.co.uk/conwy) | 94% |
| =5 | [Powys](https://openindex.co.uk/powys) | 94% |
| =7 | [Bridgend](https://openindex.co.uk/bridgend) | 93% |
| =7 | [Flintshire](https://openindex.co.uk/flintshire) | 93% |
| =7 | [Gwynedd](https://openindex.co.uk/gwynedd) | 93% |
| 10 | [Vale of Glamorgan](https://openindex.co.uk/vale-of-glamorgan) | 90% |
| 11 | [Monmouthshire](https://openindex.co.uk/monmouthshire) | 88% |
| 12 | [Carmarthenshire](https://openindex.co.uk/carmarthenshire) | 87% |
| 13 | [Rhondda Cynon Taf](https://openindex.co.uk/rhondda-cynon-taf) | 86% |
| 14 | [Caerphilly](https://openindex.co.uk/caerphilly) | 85% |
| 15 | [Swansea](https://openindex.co.uk/swansea) | 81% |
| 16 | [Neath Port Talbot](https://openindex.co.uk/neath-port-talbot) | 77% |
| 17 | [Newport](https://openindex.co.uk/newport) | 74% |
| 18 | [Denbighshire](https://openindex.co.uk/denbighshire) | 64% |
| 19 | [Isle of Anglesey](https://openindex.co.uk/isle-of-anglesey) | 63% |
| 20 | [Merthyr Tydfil](https://openindex.co.uk/merthyr-tydfil) | 62% |
| 21 | [Cardiff](https://openindex.co.uk/cardiff) | 60% |
| 22 | [Blaenau Gwent](https://openindex.co.uk/blaenau-gwent) | 51% |

Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Period: 2022. Period: 2022.

## Other rankings of this measure

- [UK](https://openindex.co.uk/rankings/radon-affected-areas/uk)
- [England](https://openindex.co.uk/rankings/radon-affected-areas/england)
- [Northern Ireland](https://openindex.co.uk/rankings/radon-affected-areas/northern-ireland)
- [Scotland](https://openindex.co.uk/rankings/radon-affected-areas/scotland)
- [North East](https://openindex.co.uk/rankings/radon-affected-areas/north-east)
- [North West](https://openindex.co.uk/rankings/radon-affected-areas/north-west)
- [Yorkshire and The Humber](https://openindex.co.uk/rankings/radon-affected-areas/yorkshire-and-the-humber)
- [East Midlands](https://openindex.co.uk/rankings/radon-affected-areas/east-midlands)
- [West Midlands](https://openindex.co.uk/rankings/radon-affected-areas/west-midlands)
- [East of England](https://openindex.co.uk/rankings/radon-affected-areas/east-of-england)
- [London](https://openindex.co.uk/rankings/radon-affected-areas/london)
- [South East](https://openindex.co.uk/rankings/radon-affected-areas/south-east)
- [South West](https://openindex.co.uk/rankings/radon-affected-areas/south-west)

- [The map](https://openindex.co.uk/map/radon-affected-areas)
- [Source and method](https://openindex.co.uk/sources/radon-affected-areas)
- [The two measures side by side](https://openindex.co.uk/map/radon?vs=population&mode=blend)

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/rankings/radon-affected-areas/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.

Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/rankings/radon-affected-areas/wales