Where can I go for more information about uses of the historical census?

Edward Higgs, A Clearer Sense of the Census (London: HMSO, 1996).
The best starting point, with discussion of how the census was taken and analysed, and of the interpretation and historical uses of the data.

E. A. Wrigley, ed., Nineteenth Century Society (Cambridge, 1972).
Seminal work on the methods of census study, including chapters on occupations and family structure.

D. Mills and K Schürer, eds., Local Communities in the Victorian Census Enumerators’ Books (Oxford: Leopard’s Head Press, 1996). Commentaries on specific areas of census-based research, including the enumeration process; population and demography; employment and occupations; migration and population turnover; family and household structure and residential patterns.

D. Mills and C. Pearce, People and Places in the Victorian Census (Cambridge, 1989).
Bibliography of publications based on census enumerators’ books.

Local Population Studies
A bi-annual journal devoted to the history of population in local and regional contexts. Most issues contain an article using the census enumerators’ books.