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The American Community Survey (ACS) is the only source of comparable, quality information about the people in all our communities. Learn more about the basic design and methodology used in the ACS, quality measures used to monitor the accuracy and reliability of ACS data, the process to add or modify questions on the survey, an archive of ACS questionnaires and instruction guides, as well as research related to what would happen if the ACS was not mandated by law.
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