Town comparison
Caerphilly vs St Athan
Which is better to live in? 14.5 miles apart — compared on house prices, crime, schools, broadband and more.
The verdict
St Athan is the more affordable option, with average house prices around 2% lower. St Athan has the lower crime rate of the two.
Avg House Price
Caerphilly
£249,896
St Athan
£245,325
Crime Rate
Caerphilly
84.9
St Athan
63.1
Top-Two School Inspection Bands
Caerphilly
N/A
St Athan
N/A
Avg Download Speed
Caerphilly
446.7
St Athan
467.1
EPC Rating
Caerphilly
71.5
St Athan
70.7
Median Income
Caerphilly
£29,441
St Athan
£32,675
House Prices (2025)
Most affordable in WalesProperty in Caerphilly commands an average of £249,896, compared with £245,325 in St Athan – a difference of 2%. The most affordable entry point in Caerphilly is a flat at £128,824, while in St Athan it is a terraced at £160,726.
Average Price by Property Type (2025)
Biggest gap: terraced homes are 21% pricier in Caerphilly (£195,212 vs £160,726).
Price Trend (11 Years)
Over the last 9 years, Caerphilly prices grew faster — 44% vs -38%.
Crime & Safety
Safest in WalesSt Athan has a crime rate of 63.1 per 1,000 residents, which is 35% lower than Caerphilly at 84.9 per 1,000. The most common crime category in Caerphilly is violent-crime, while in St Athan it is violent-crime.
Crime Rate by Category (per 1,000 residents)
Both towns share the same top crime category: violent crime.
Schools & Education
Best for schools in WalesSchool quality data is not fully available for both Caerphilly and St Athan. Caerphilly has 0 schools and St Athan has 0 schools.
Caerphilly School Inspection Breakdown
St Athan School Inspection Breakdown
| Metric | Caerphilly | St Athan |
|---|---|---|
| Total Schools | 0 | 0 |
| Primary | 0 | 0 |
| Secondary | 0 | 0 |
| % Top two bands | N/A | N/A |
Broadband & Connectivity
Average broadband speeds are 467.1 Mbps in St Athan and 446.7 Mbps in Caerphilly. Superfast coverage (30 Mbps+) reaches 97.8% of premises in Caerphilly and 96.9% in St Athan. Gigabit availability stands at 85.9% in Caerphilly and 92.4% in St Athan.
St Athan is the faster of the two by 5% on average download speed (467 vs 447 Mbps).
Energy Efficiency & Running Costs
Caerphilly leads on energy efficiency with an average EPC score of 71.5 (C), while St Athan averages 70.7 (C). Estimated annual energy costs average £1,117 in Caerphilly and £1,270 in St Athan. 64.2% of homes in Caerphilly have an EPC rating of C or above, compared to 62.2% in St Athan.
Caerphilly has more energy-efficient housing — 64.2% reach band C or above, vs 62.2% in the other.
Demographics & Economy
Median household income is £32,675 in St Athan and £29,441.3 in Caerphilly. The median age is 41.3 in Caerphilly and 45.1 in St Athan. Owner-occupancy is 62.8% in Caerphilly versus 71.9% in St Athan. Employment rates stand at 54% in Caerphilly and 55.8% in St Athan.
| Indicator | Caerphilly | St Athan |
|---|---|---|
| Population | 33,104 | 3,108 |
| Median Age | 41.3 | 45.1 |
| Median Household Income | £29,441.3 | £32,675 |
| Employment Rate | 54% | 55.8% |
| Owner Occupied | 62.8% | 71.9% |
| Degree-Level Qualified | 32.6% | 37.3% |
Location
Common questions
Frequently asked questions
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