Wakefield is a city in West Yorkshire , England , on the River Calder and the eastern edge of the Pennines , which had a population of 76,886 in 2001 , Office for National Statistics : Census 2001 : Urban Areas : Table KS01 : Usual Resident Population Retrieved 26 August 2009 increasing slightly for the five Wakefield wards ( East , North , Rural , South and West ) to 77,512 at the 2011 census .
Wakefield had a population of over 80,000 in 2011 .