This paper develops an urban classification based on the census for 1851 -1 911 for England and Wales. The classification is based on the well-established Law-Robson urban classification but using the new data available from the e-version of the census. The paper discusses the Law-Robson criteria used to classify towns, and how urban parishes can be identified. The paper then presents the urban classification. An introduction to the documentation is given for possible data download.