Census Bureau's "By Decade" website - includes a variety of publications, questionnaires, datasets, and more
Questions asked (see questionnaire)
Name of head of family; age; sex; race; slaves; deaf and dumb; blind; foreigners not naturalized.
Social Explorer - remote access limited to UCSD affiliates
Find all 1830 census publications in the library catalog.
Fifth Census [C 3.14:830/reprint]
Abstract of the returns of the Fifth Census [C 3.14:1830/2]