These are digital boundaries for the system of counties essentially created by the 1889 Local Government Act and continuing to exist until 1974. Their initial primary focus was the administration of education. During the twentieth century, they can be treated as aggregates of local government districts, although note that administratively County Boroughs were independent of the counties they were geographically part of. This file represents the system as it was used to report the 1961 Census of Population, and does not separately identify County Boroughs. Statistical data and other information used in “A Vision of Britain through Time” can be accessed here: http://www.visionofbritain.org.uk/data.This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data.