Perth is a centrally located Scottish city, on the banks of the River Tay. It is the administrative centre of Perth and Kinross council area and is the historic county town of Perthshire. It had a population of about 47,430 in 2018. There has been a settlement at Perth since prehistoric times. It is a natural mound raised slightly above the flood plain of the Tay. The area surrounding the modern city is known to have been occupied ever since the arrival of Mesolithic hunter-gatherers.