# Pentwyn

North east Cardiff. 7,732 people (mid-2024 estimate) in 2.1 square kilometres.

Pentwyn had 7,315 usual residents at the census (ONS Census 2021).

Middle area. Code W02000375. In: [Wales](https://openindex.co.uk/wales) › [Cardiff](https://openindex.co.uk/cardiff)

## Key figures

- **Median sale price: £203,000** (2025). The median price paid for a home in Pentwyn was £203,000 in 2025. Joint 1,570th cheapest of 7,259. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026. https://openindex.co.uk/cardiff/pentwyn#f-house-sales-median-price
- **Population: 7,315** (2021). Pentwyn had 7,315 usual residents at the census (ONS Census 2021). Joint 4,718th 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/cardiff/pentwyn#f-population
- **People in radon Affected Area squares: 100%** (2022). About 100% of people in Pentwyn 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/cardiff/pentwyn#f-radon-affected-share
- **Gigabit broadband coverage: 94.5%** (January 2026). In Pentwyn, 94.5% 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/cardiff/pentwyn#f-gigabit-coverage

## On the map

- [Radon Affected Area by middle area](https://openindex.co.uk/map/radon-affected-areas?place=W02000375) (Worked out by Open Index · 2022): About 100% of people in Pentwyn 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=W02000375) (Worked out by Open Index · 2025): 66 homes were sold in Pentwyn in 2025.
- [Crime and ASB by middle area](https://openindex.co.uk/map/recorded-crime?place=W02000375) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for Pentwyn.
- [Population by middle area](https://openindex.co.uk/map/population?place=W02000375) (Census 2021, England and Wales): Pentwyn had 7,315 usual residents at the census.

## Recorded crime in Pentwyn

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Pentwyn at a rate of 74.9 per 1,000 people.
That compares with 112.2 per 1,000 people across Cardiff.
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 | 231 |
| Other crime | 100 |
| Shoplifting | 65 |
| Criminal damage and arson | 54 |
| Anti-social behaviour | 39 |
| Vehicle crime | 39 |
| Burglary | 28 |
| Drug offences | 14 |
| Robbery | 6 |
| Theft from the person | 3 |

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

## How Pentwyn compares

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

| Measure | Pentwyn | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £203,000 | 7th cheapest | 48 middle areas, Cardiff · 2025 |
| Population | 7,315 | 24th most populated | 48 middle areas, Cardiff · 2021 |
| People in radon Affected Area squares | 100% | joint most people in radon Affected Areas | 48 middle areas, Cardiff · 2022 |
| Gigabit broadband coverage | 94.5% | 15th lowest | 48 middle areas, Cardiff · Jan 2026 |

## Is Pentwyn safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Pentwyn at a rate of 74.9 per 1,000 people.
That compares with 112.2 per 1,000 people across Cardiff.
Across Wales as a whole, the recorded crime rate was 96.7 per 1,000 people.
In August 2026 alone, 62 cases of crime and anti-social behaviour were recorded in Pentwyn.
In the 12 months to August 2026, the most common types were violence and sexual offences (231), other crime (100) and shoplifting (65).
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 Cardiff

These figures are published for the whole of Cardiff, not for each middle area, so they describe all of Cardiff and not Pentwyn alone. [See Cardiff](https://openindex.co.uk/cardiff)

- **Average house price: £272,252** (July 2026). Cardiff’s average house price was £272,252 in July 2026 (HM Land Registry). Up 2.7% in a year. Source: UK House Price Index, July 2026. Published 16 September 2026.
- **Median full-time pay: £36,946** (2025). Full-time workers living in Cardiff earned a median of £36,946 in 2025 (ONS earnings survey). 121st lowest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 7.4×** (2025). A home in Cardiff costs 7.4 times local full-time pay. Joint 167th least affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 16 September 2026.
- **Population estimate: 381,516** (2025). Cardiff’s population was an estimated 381,516 in mid-2025 (ONS population estimates). Down 0.1% in a year. Source: Mid-year population estimates, 2025. Published 1 October 2026.

## Pentwyn in brief

The median price paid for a home in Pentwyn was £203,000 in 2025.
Pentwyn had 7,315 usual residents at the census.
About 100% of people in Pentwyn live in a 1 km square that the radon atlas marks as a radon Affected Area.
In Pentwyn, 94.5% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Middle area
- Code: W02000375
- Ward: [Pentwyn †](https://openindex.co.uk/cardiff/ward/pentwyn)
- Constituency: [Cardiff East †](https://openindex.co.uk/constituency/cardiff-east)
- Council: [Cardiff](https://openindex.co.uk/cardiff)
- Nation: [Wales](https://openindex.co.uk/wales)
- Area: 2.12 km²
- People, mid-2024: 7,732*
- Neighbourhoods: 4
- Output areas: 21

* 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

[Llanedeyrn](https://openindex.co.uk/cardiff/llanedeyrn), [Cyncoed North](https://openindex.co.uk/cardiff/cyncoed-north), [Llanrumney South](https://openindex.co.uk/cardiff/llanrumney-south), [Pontprennau](https://openindex.co.uk/cardiff/pontprennau), [Pen-y-lan North](https://openindex.co.uk/cardiff/pen-y-lan-north), [Llanrumney North](https://openindex.co.uk/cardiff/llanrumney-north)

## Latest updates for Pentwyn

- Dental practices updated: NHS England · Oct 2026.
- Schools updated: Ofsted · Oct 2026.
- GP practices updated: NHS England · Oct 2026.
- Schools updated: Department for Education · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/W02000375

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/cardiff/pentwyn, or to one figure with its anchor, https://openindex.co.uk/cardiff/pentwyn#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 2026.10.8, https://doi.org/10.5281/zenodo.23508850. The HTML page: https://openindex.co.uk/cardiff/pentwyn