Tonmawr is located in the county of West Glamorgan, Wales, three miles east of the town of Neath, nine miles east of the major city of Swansea, 27 miles north-west of Cardiff, and 155 miles west of London. Tonmawr lies three miles west of the Mid Glamorgan border, and was historically in the county of Glamorgan. Tonmawr falls within the unitary authority of Castell-nedd Port Talbot - Neath Port Talbot. It is in the SA12 postcode district. The post town for Tonmawr is Port Talbot.
Tonmawr is in the ceremonial county of West Glamorgan, the historic county of Glamorgan, and the administrative county of Castell-nedd Port Talbot - Neath Port Talbot.
|Ceremonial County||West Glamorgan|
|Administrative County||Castell-nedd Port Talbot - Neath Port Talbot|
Tonmawr is situated roughly centrally between the southernmost and northernmost extremities of West Glamorgan, and towards the easternmost extremity of West Glamorgan.
The nearest postcode to the centre of Tonmawr is SA12 9SY.
Tonmawr is situated towards the northernmost extremity of the SA12 postcode district, and roughly centrally between the easternmost and westernmost extremities of the SA12 postcode district.
The post town for Tonmawr is Port Talbot. Tonmawr is in the SA12 postcode district, which corresponds to the post town of Port Talbot.
The centre of Tonmawr is located at position 51.65301° latitude and -3.73032° longitude.
The centre of Tonmawr is located at the grid reference easting 280394 and northing 196332 within the British National Grid (OSGB36) system.
Position of Tonmawr relative to nearby towns. Distance is measured from the centre of Tonmawr to the centre of the town.
Position of Tonmawr relative to nearby cities. Distance is measured from the centre of Tonmawr to the centre of the city.