Trethomas is located in the county of Gwent, Wales, two miles north-east of the town of Caerphilly, eight miles west of the major city of Newport, eight miles north of Cardiff, and 132 miles west of London. Trethomas lies two miles north-east of the South Glamorgan border, and was historically in the county of Monmouthshire. Trethomas falls within the unitary authority of Caerffili - Caerphilly. It is in the CF83 postcode district. The post town for Trethomas is Caerphilly.
Trethomas is in the ceremonial county of Gwent, the historic county of Monmouthshire, and the administrative county of Caerffili - Caerphilly.
Ceremonial County | Gwent |
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Historic County | Monmouthshire |
Administrative County | Caerffili - Caerphilly |
Trethomas is situated towards the southernmost extremity of Gwent, and towards the westernmost extremity of Gwent.
The nearest postcode to the centre of Trethomas is CF83 8BY.
Trethomas is situated roughly centrally between the southernmost and northernmost extremities of the CF83 postcode district, and roughly centrally between the easternmost and westernmost extremities of the CF83 postcode district.
The post town for Trethomas is Caerphilly. Trethomas is in the CF83 postcode district, which corresponds to the post town of Caerphilly.
The centre of Trethomas is located at position 51.59165° latitude and -3.18361° longitude.
Latitude | 51.59165° |
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Longitude | -3.18361° |
The centre of Trethomas is located at the grid reference easting 318103 and northing 188752 within the British National Grid (OSGB36) system.
Easting | 318103 |
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Northing | 188752 |
Position of Trethomas relative to nearby towns. Distance is measured from the centre of Trethomas to the centre of the town.
Position of Trethomas relative to nearby cities. Distance is measured from the centre of Trethomas to the centre of the city.