Neighbourhood · 2,802 residents
Good · better than 5 in 10 suburbs
Check Local Score out of 100 · 60 is typical for the country
Each arc is a topic, coloured by its score
Map outline: Approximate — no official boundary exists for this neighbourhood
St Mellons scores 59/100 overall, which the scorecard rates as good — 60 is typical for the country.
It stands out for property market (83).
It scores lowest on food & drink (19).
Scores come from official data on safety, schools, transport, prices, health, food & drink and the local environment, for St Mellons in Wales, each measured against the national average.
St Mellons reads as a semi-detached suburb before anything else: pebble-dashed and brick family homes on quiet estate roads, driveways with two cars, hedges rather than walls. It's the kind of place built for households settling in rather than passing through, and the streets feel that way — parked-up, unhurried, more school-run than nightlife.
The housing picture is the clearest signal of who lives here. Semi-detached houses dominate the market, most sold freehold, and at a median of £280,000 you're sitting close to Cardiff's own figure and modestly above the Welsh average — this isn't a discount suburb, it's a mainstream family one. Prices have drifted up gently over the past year rather than surged, and the longer trend is described as improving, which fits a place that's settled rather than volatile. Detached and semi-detached homes here actually sell for meaningfully more than the Welsh norm, suggesting a fairly narrow, family-shaped stock rather than a mixed one. On schooling, the area itself has limited capacity — only one school sits within its own boundary — but Oakfield Primary and Willowbrook Primary, both sizeable community schools, sit close enough to anchor the area for anyone with young children, alongside the voluntary-aided Bishop Childs. With a median age of 37, this is a working-age, family-forming population, not a retirement pocket.
Green space is a genuine asset — nine sites covering fifty-three hectares, which is generous for the population size — and that shapes the rhythm of downtime here more than any restaurant strip does; this is a walk-the-dog-and-back kind of suburb rather than one built around eating out. Connectivity holds up well too, with strong full-fibre coverage across most premises, which matters if you're working from home some days and commuting into Cardiff on others via the local bus network.
The one figure that jars against all this domestic calm is safety. Crime sits well above Cardiff's own rate — over 70% higher — driven heavily by violence and sexual offences, which account for over a third of all recorded incidents, with anti-social behaviour and public order close behind. That's the quiet spine of the place: an area that scores well on housing, environment and connectivity, but noticeably poorly on health provision and, more strikingly, on safety relative to its parent city. It's not a place defined by crime on the ground — the streets themselves feel ordinary — but the numbers say this is worth sitting with rather than skimming past. In the Welsh deprivation rankings, St Mellons sits in the less-deprived half of the country, decile 7, which tempers the picture somewhat: this isn't a struggling area, but it isn't a low-crime one either.
Put together, St Mellons suits people who want space, a garden, and reasonable value against Cardiff prices, and who are comfortable doing their own homework on the safety figures rather than assuming suburb equals quiet. Family formation, freehold semis, decent broadband and accessible parks are the pull; the crime rate relative to Cardiff is the trade-off you'd want to look at street by street before committing.
Data last updated: 19 October 2026
Pick another area to line them up side by side — the verdict, both Check Local Scores, and what actually separates them.