Grimethorpe is a village in the metropolitan borough of Barnsley in South Yorkshire, England. As of the 2011 census it has a population of 4,672. Grimethorpe is located in eastern Barnsley, and until the local government reorganisation of 1974, it was part of the Hemsworth district and constituency. The village is part of the North East ward of Barnsley Metropolitan Borough Council. For much of the 20th century Grimethorpe's economy was rooted in coal mining.