Pentyrch and St Fagans
vs Radyr
Pentyrch and St Fagans has the younger population: 15% of residents are aged 15–29, against 14% in Radyr. Homes in Radyr sold for a median of £389,000, 13% above Pentyrch and St Fagans. Pentyrch and St Fagans has more green space nearby (48% within 500 m, against 31%).
People
Pentyrch and St Fagans has 9,529 residents in 3,944 households; Radyr has 7,094 in 2,820. Pentyrch and St Fagans has the higher share of residents aged 65 and over: 22%, 2.8 percentage points more than Radyr (Cardiff: 15%). The share of people living alone is about the same in both (22% and 22%).
Homes and prices
In both, detached houses are the most common type of home: 58% of homes in Pentyrch and St Fagans and 57% in Radyr. Radyr has the higher share of owner-occupied homes: 85%, 1.9 percentage points more than Pentyrch and St Fagans (Cardiff: 58%). Radyr has the higher share of private renting: 11%, 1.4 percentage points more than Pentyrch and St Fagans (Cardiff: 24%). Over two years, homes sold for a median of £345,497 in Pentyrch and St Fagans and £389,000 in Radyr, against £270,000 across Cardiff.
Surroundings
Pentyrch and St Fagans has the higher share of land within 500 m that is green space: 48%, 17.1 percentage points more than Radyr (Cardiff: 19%). A typical postcode has 21 everyday shops and services within a 15-minute walk in Pentyrch and St Fagans, and 49 in Radyr. The typical postcode is 559 m from the nearest school in Pentyrch and St Fagans and 448 m in Radyr. The typical postcode is 2,687 m from the nearest tram stop or railway station in Pentyrch and St Fagans and 935 m in Radyr. Gigabit-capable broadband reaches 39% of premises in Pentyrch and St Fagans and 75% in Radyr.
Safety
Over 12 months, police recorded 54 crimes and incidents per 1,000 residents in Pentyrch and St Fagans and 30 in Radyr, against 118 across Cardiff. Police.uk records crimes by approximate location, not by where victims or offenders live. Busy streets, shops, stations and nightlife record more. Figures are counts, not a measure of personal risk.
Sources: Census 2021 (ONS) · HM Land Registry Price Paid Data · official school registers · © OpenStreetMap contributors · Environment Agency · data.police.uk, 12 months to Aug 2026 · Ofcom Connected Nations
In brief.
Each ward in a few lines, from its own page.
Pentyrch and St Fagans is one of 28 wards in Cardiff, home to 9,529 people in 3,944 households (Census 2021). Homes sold for a median of £345,497 over the past two years, 28% above the Cardiff median. On average 48% of the land within 500 metres of a home postcode is green space — 160% above the Cardiff average.
Radyr is one of 28 wards in Cardiff, home to 7,094 people in 2,820 households (Census 2021). Homes sold for a median of £389,000 over the past two years, 44% above the Cardiff median. On average 31% of the land within 500 metres of a home postcode is green space — 68% above the Cardiff average.
More comparisons.
Pentyrch and St Fagans and Radyr next to other wards of Cardiff.