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Data Suppression

Data users often question why certain American Community Survey (ACS) estimates are not
available. The missing estimates can be caused by data suppression. Data suppression refers to
the various methods or restrictions that are applied to ACS estimates to limit the disclosure of
information about individual respondents and to reduce the number of estimates with
unacceptable levels of statistical reliability.

The document below explains the factors that contribute to data suppression.


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Source: U.S. Census Bureau | American Community Survey Office | Email ACS | Last Revised: December 04, 2014
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