Radnor or Radnorshire (Welsh:Sir Faesyfed) is a sparsely populated area, one of thirteen historic and former administrative counties of Wales. It is represented by the Radnorshire area of Powys, which according to the 2011 census, had a population of 25,821. The historic county is bounded to the north by Montgomeryshire and Shropshire, to the east by Herefordshire, to the south by Brecknockshire and to the west by Cardiganshire.