 To the west of this is a ridge of mountains with a steep scarp slope to the west , the Clwydian Range . The highest point of these hills is Moel <unk> at 1 @,@ 820 ft ( 555 m ) . The north @-@ central part of the county is the broad Vale of Clwyd , and the best agricultural land lies here . To the south of this , the land is much higher and more rugged , the Denbigh Moors and the Berwyn range are here . The central and western parts of the county are much more rural than the coastal area and the east , with part of the Snowdonia National Park lying in the western part of the county . The population as of 2007 is estimated at 491 @,@ 100 , based on figures for the four component unitary authority areas . 
