(File Size - 5 KB). The 2011 rural-urban classification (RUC) of counties in England is based on the 2011 RUC of Output Areas (OA) published in August 2013, and allows users to create a rural/urban view of county level products. The classification was produced by the University of Sheffield and was sponsored by a cross-Government working group comprising Department for Environment, Food and Rural Affairs, Department of the Communities and Local Government and Office for National Statistics.