Alfreton is a town and civil parish in Amber Valley, Derbyshire, England, adjoining the Bolsover and North East Derbyshire districts. It was formerly a Norman Manor and later an Urban District. The population of the Alfreton parish was 7,971 at the 2011 Census. The villages of Ironville, Riddings, Somercotes and Swanwick were historically part of the Manor and Urban District, and the population including these was 24,476 in 2001.