For detailed information about the IPUMS-International samples and variables, and for other supporting documentation, consult the following.

Samples. Both summary and detailed information about the 21 census microdata samples included in the IPUMS-International database.

Variables. Information about the variables available in each sample, together with variable codes, descriptions, and discussions of universes and comparability issues.

Source Materials. Supporting documentation for each sample, including reproductions of census questionnaires and enumerator instructions.