Source with several citations

blsamuel, sources are not tied to individuals. They are attached to "facts" or assertions. The first time we make an assesrtion that came from a source, we cite that source in full, down to the specific page/entry/whatever that supports the assertion to which it is attached.

Thereafter, in that same piece of writing (which would include an individual's narrative within our database), we can use a short form of the census. However, three points should be kept in mind:

1. The shortened citation must still contain enough information to identify it. In each of the shortened citations above, there is not enough information to identify which census year or locale.  
2. It's never wise to use short forms until a piece of writing is ready for publication. During the research and writing processes, we frequently delete information. If we delete an assertion to which the full cite is attached, then all subsequent short forms of that citation would left without their full identifying information.
3. If we are using genealogical software (which I suspect you are), then the first time we use a source, we create the three basic types in a template: Source List Entry, Full Reference Note, and Shortened Citation. Thereafter, when we use that source, we choose the Full Reference Note, let the software automatically populate the fields, and then add just the specific data for the household of interest. When we print a "report" from the database, most software will then automatically assign full or shortened citations as appropriate.

EE's Chapter 6 "Censuses," demonstrates how to handle the creation of short forms for a variety of censuses.