Integrated Public Use Microdata Series (IPUMS)

Integrated Public Use Microdata Series (IPUMS)

The Integrated Public Use Microdata Series (IPUMS) consists of fifty-nine high-precision samples of the American population drawn from fifteen federal censuses, from the American Community Surveys of 2000-2007, and from the Puerto Rican Community Surveys of 2005-2007. Some of these samples have existed for years, and others were created specifically for this database. These samples collectively constitute our richest source of quantitative information on long-term changes in the American population. However, because different investigators created these samples at different times, they employed a wide variety of record layouts, coding schemes, and documentation. This has complicated efforts to use them to study change over time. The IPUMS assigns uniform codes across all the samples and brings relevant documentation into a coherent form to facilitate analysis of social and economic change.

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