Pentwyn
vs Trowbridge
Trowbridge has the younger population: 19% of residents are aged 15–29, against 19% in Pentwyn. Homes in Trowbridge sold for a median of £230,000, 10% above Pentwyn. Pentwyn has more green space nearby (29% within 500 m, against 22%).
People
Pentwyn has 16,197 residents in 6,516 households; Trowbridge has 17,237 in 7,014. Pentwyn has the higher share of residents aged 65 and over: 16%, 3.7 percentage points more than Trowbridge (Cardiff: 15%). The share of people living alone is about the same in both (30% and 31%).
Homes and prices
The most common type of home is terraced houses in Pentwyn (46%) and semi-detached houses in Trowbridge (41%). Pentwyn has the higher share of owner-occupied homes: 58%, 7.9 percentage points more than Trowbridge (Cardiff: 58%). Pentwyn has the higher share of private renting: 16%, 1.3 percentage points more than Trowbridge (Cardiff: 24%). Over two years, homes sold for a median of £210,000 in Pentwyn and £230,000 in Trowbridge, against £270,000 across Cardiff.
Surroundings
Pentwyn has the higher share of land within 500 m that is green space: 29%, 6.8 percentage points more than Trowbridge (Cardiff: 19%). A typical postcode has 75 everyday shops and services within a 15-minute walk in Pentwyn, and 51 in Trowbridge. The typical postcode is 242 m from the nearest school in Pentwyn and 284 m in Trowbridge. The typical postcode is 2,198 m from the nearest tram stop or railway station in Pentwyn and 5,702 m in Trowbridge. Gigabit-capable broadband reaches 92% of premises in Pentwyn and 93% in Trowbridge.
Safety
Over 12 months, police recorded 76 crimes and incidents per 1,000 residents in Pentwyn and 109 in Trowbridge, 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.
Pentwyn is one of 28 wards in Cardiff, home to 16,197 people in 6,516 households (Census 2021). Homes sold for a median of £210,000 over the past two years, 22% below the Cardiff median. On average 29% of the land within 500 metres of a home postcode is green space — 57% above the Cardiff average.
Trowbridge is one of 28 wards in Cardiff, home to 17,237 people in 7,014 households (Census 2021). Homes sold for a median of £230,000 over the past two years, 15% below the Cardiff median. On average 22% of the land within 500 metres of a home postcode is green space — 20% above the Cardiff average.
More comparisons.
Pentwyn and Trowbridge next to other wards of Cardiff.