# Lower Penarth & Sully

East Vale of Glamorgan. 10,571 people (mid-2024 estimate) in 10 square kilometres.

Lower Penarth & Sully had 10,162 usual residents at the census (ONS Census 2021).

Middle area. Code W02000244. In: [Wales](https://openindex.co.uk/wales) › [Vale of Glamorgan](https://openindex.co.uk/vale-of-glamorgan)

## Key figures

- **Median sale price: £402,500** (2025). The median price paid for a home in Lower Penarth & Sully was £402,500 in 2025. Joint 1,879th most expensive of 7,259. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026. https://openindex.co.uk/vale-of-glamorgan/lower-penarth-and-sully#f-house-sales-median-price
- **Population: 10,162** (2021). Lower Penarth & Sully had 10,162 usual residents at the census (ONS Census 2021). Joint 1,046th most populated of 9,448. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/vale-of-glamorgan/lower-penarth-and-sully#f-population
- **People in radon Affected Area squares: 95%** (2022). About 95% of people in Lower Penarth & Sully live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/vale-of-glamorgan/lower-penarth-and-sully#f-radon-affected-share
- **Gigabit broadband coverage: 78.9%** (January 2026). In Lower Penarth & Sully, 78.9% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. https://openindex.co.uk/vale-of-glamorgan/lower-penarth-and-sully#f-gigabit-coverage

## On the map

- [Radon Affected Area by middle area](https://openindex.co.uk/map/radon-affected-areas#place=W02000244) (Worked out by Open Index · 2022): About 95% of people in Lower Penarth & Sully live in a 1 km square that the radon atlas marks as a radon Affected Area.
- [Sales per year by middle area](https://openindex.co.uk/map/house-sales-per-year#place=W02000244) (Worked out by Open Index · 2025): 174 homes were sold in Lower Penarth & Sully in 2025.
- [Crime and ASB by middle area](https://openindex.co.uk/map/recorded-crime#place=W02000244) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for Lower Penarth & Sully.
- [Population by middle area](https://openindex.co.uk/map/population#place=W02000244) (Census 2021, England and Wales): Lower Penarth & Sully had 10,162 usual residents at the census.

## Recorded crime in Lower Penarth & Sully

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Lower Penarth & Sully at a rate of 44.0 per 1,000 people.
That compares with 73.3 per 1,000 people across Vale of Glamorgan.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.

| Kind of crime, 12 months to August 2026 | Count |
| --- | --- |
| Violence and sexual offences | 191 |
| Other crime | 109 |
| Anti-social behaviour | 61 |
| Vehicle crime | 36 |
| Criminal damage and arson | 34 |
| Burglary | 25 |
| Drug offences | 4 |
| Shoplifting | 3 |
| Robbery | 2 |
| Theft from the person | 0 |

Source: police.uk, 12 months to August 2026.

## How Lower Penarth & Sully compares

Each middle area against every other middle area the measure covers.

| Measure | Lower Penarth & Sully | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £402,500 | 4th most expensive | 15 middle areas, Vale of Glamorgan · 2025 |
| Population | 10,162 | 5th most populated | 15 middle areas, Vale of Glamorgan · 2021 |
| People in radon Affected Area squares | 95% | 4th fewest people in radon Affected Areas | 15 middle areas, Vale of Glamorgan · 2022 |
| Gigabit broadband coverage | 78.9% | 3rd lowest | 15 middle areas, Vale of Glamorgan · Jan 2026 |

## Is Lower Penarth & Sully safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Lower Penarth & Sully at a rate of 44.0 per 1,000 people.
That compares with 73.3 per 1,000 people across Vale of Glamorgan.
Across Wales as a whole, the recorded crime rate was 96.7 per 1,000 people.
In August 2026 alone, 67 cases of crime and anti-social behaviour were recorded in Lower Penarth & Sully.
In the 12 months to August 2026, the most common types were violence and sexual offences (191), other crime (109) and anti-social behaviour (61).
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.

## Figures for the whole of Vale of Glamorgan

These figures are published for the whole of Vale of Glamorgan, not for each middle area, so they describe all of Vale of Glamorgan and not Lower Penarth & Sully alone. [See Vale of Glamorgan](https://openindex.co.uk/vale-of-glamorgan)

- **Average house price: £300,358** (August 2026). Vale of Glamorgan’s average house price was £300,358 in August 2026 (HM Land Registry). Up 3.2% in a year. Source: UK House Price Index, August 2026. Published 21 October 2026.
- **Median full-time pay: £38,656** (2025). Full-time workers living in Vale of Glamorgan earned a median of £38,656 in 2025 (ONS earnings survey). 169th highest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 7.8×** (2025). A home in Vale of Glamorgan costs 7.8 times local full-time pay. Joint 140th least affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 21 October 2026.
- **Population estimate: 135,362** (2025). Vale of Glamorgan’s population was an estimated 135,362 in mid-2025 (ONS population estimates). No change in a year. Source: Mid-year population estimates, 2025. Published 1 October 2026.

## Lower Penarth & Sully in brief

The median price paid for a home in Lower Penarth & Sully was £402,500 in 2025.
Lower Penarth & Sully had 10,162 usual residents at the census.
About 95% of people in Lower Penarth & Sully live in a 1 km square that the radon atlas marks as a radon Affected Area.
In Lower Penarth & Sully, 78.9% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Middle area
- Code: W02000244
- Ward: [Plymouth †](https://openindex.co.uk/vale-of-glamorgan/ward/plymouth)
- Constituency: [Cardiff South and Penarth †](https://openindex.co.uk/constituency/cardiff-south-and-penarth)
- Council: [Vale of Glamorgan](https://openindex.co.uk/vale-of-glamorgan)
- Nation: [Wales](https://openindex.co.uk/wales)
- Area: 10.30 km²
- People, mid-2024: 10,571*
- Neighbourhoods: 6
- Output areas: 34

* People: worked out by Open Index by adding up the neighbourhood estimates inside this area.
† Best fit: the ward and constituency this middle area mostly lies in. Its edges do not follow theirs.

## Next door

[Dinas Powys](https://openindex.co.uk/vale-of-glamorgan/dinas-powys), [Penarth](https://openindex.co.uk/vale-of-glamorgan/penarth), [Llandough & Cogan](https://openindex.co.uk/vale-of-glamorgan/llandough-and-cogan), [Palmerstown](https://openindex.co.uk/vale-of-glamorgan/palmerstown), [Barry Island](https://openindex.co.uk/vale-of-glamorgan/barry-island)

## Latest updates for Lower Penarth & Sully

- August 2026 house prices published: HM Land Registry and partners · Oct 2026.
- September 2026 rent published: ONS private rents · Oct 2026.
- Dental practices updated: NHS England · Oct 2026.
- Schools updated: Ofsted · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/W02000244

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/vale-of-glamorgan/lower-penarth-and-sully, or to one figure with its anchor, https://openindex.co.uk/vale-of-glamorgan/lower-penarth-and-sully#f-house-sales-median-price.

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 2026.10.11. The HTML page: https://openindex.co.uk/vale-of-glamorgan/lower-penarth-and-sully