Question: is merthyr tydfil a county?
Answer: Merthyr Tydfil (/ˈmɜːrθər ˈtɪdvɪl/; Welsh: Merthyr Tudful [ˈmɛrθɪr ˈtɪdvɪl]) is the main town in Merthyr Tydfil County Borough. The town is administered by Merthyr Tydfil County Borough Council and is about 23 miles (37 km) north of Cardiff, Wales. The town has a population of 43,820 (2011 Census).