Trethomas on the map
Built-up area0.3 km² (0.1 sq mi)
Location in CaerphillyTrethomas sits where the marker shows within the county.
About Trethomas
Trethomas is a village located in the Caerphilly county borough of Wales, within the postcode area CF83. It lies approximately five miles north of Cardiff, making it a convenient location for those who wish to access the capital city while enjoying a quieter residential environment. The village features a range of local amenities, including shops, schools, and parks, catering to the needs of its residents.
The area is characterised by its mix of modern housing and older properties, reflecting its development over the years. Trethomas is well-connected by public transport, with bus services linking it to nearby towns and cities. The surrounding countryside offers opportunities for outdoor activities, including walking and cycling, making it a suitable place for those who appreciate nature and a community atmosphere.
School Ratings in Trethomas
Families in Trethomas have access to 70 local schools.
House Prices in Trethomas
Homes sell for an average of £216K locally. Most of the housing is made up of semi-detached homes, averaging £198K.
Crime and Anti-Social Behaviour in Trethomas
Crime in the area is higher than the national average. Anti-social behaviour is the leading concern across Trethomas, with 99 incidents recorded in July 2026.
Healthcare in Trethomas
There are 5 GP surgeries within three miles of Trethomas, the nearest being Ty Bryn Surgery (0.6 miles away).
Property Prices 6,745 sales
Schools & Education 70 within 5 miles View all schools
Household Income in Trethomas ONS 2023
The average total household income in Trethomas is approximately £45,243 a year before tax, 18% below the national average of £55,302. After tax and benefits, the average disposable (net) household income is around £34,762. These are modelled estimates from the Office for National Statistics for the financial year ending 2023.
Net (after tax) household income averages £34,762.
Businesses in Trethomas ONS 2025
There are approximately 1,420 active businesses based in Trethomas, around 26 for every 1,000 residents. The local economy is dominated by small firms: about 87% are micro-businesses employing fewer than 10 people, while 30 are larger employers with 50 or more staff. Figures are from the Office for National Statistics UK Business Counts.
Crime in Trethomas 494 crimes · July 2026
Crime figures for Trethomas are higher than the England and Wales average, with violence & sexual offences the most prevalent offence recorded. Urban density and footfall contribute to elevated reporting in areas like this. Ongoing investment in policing and community safety programmes aims to improve the picture.
Crime figures depend on reporting by individual police forces and may not reflect the full picture in all areas.
Nearest Train Stations 6 stations
Location
Nearby Towns & Villages 12 found
Local Government
Home Ownership in Trethomas
Of the 23,666 households in and around Trethomas, 68% are owned, 19% are socially rented and 13% are privately rented. Home ownership here is higher than the England and Wales average of 63%.
Tenure from the 2021 Census (ONS), for the postcode districts covering Trethomas.