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2005-2009 American Community Survey County-to-County Migration Files
2005-2009 American Community Survey County-to-County Migration Files
Working Paper Number: SEHSD-WP2012-06
Executive Summary
This working paper accompanies the release of the County-to-County and County/Minor Civil Division (MCD)-to-County/MCD files, which use data collected by the American Community Survey (ACS) from 2005 through 2009. Historically, the Census Bureau has released migration flow products going back to the 1940 Census, the first year a previous residence question was asked on the Decennial Census. County/MCD-to-county/MCD files were produced from the 1980, 1990, and 2000 Census data. Prior to the release of this set of flow products, the only ACS migration flow tables available were for state-to-state flows.
Table Notes
Sample size and data quality measures (including coverage rates, allocation rates, and response rates) can be found on the American Community Survey website in the Methodology section.
Data are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate arising from sampling variability is represented through the use of a margin of error. The value shown here is the 90 percent margin of error. The margin of error can be interpreted roughly as providing a 90 percent probability that the interval defined by the estimate minus the margin of error and the estimate plus the margin of error (the lower and upper confidence bounds) contains the true value. In addition to sampling variability, the ACS estimates are subject to nonsampling error (for a discussion of nonsampling variability, see Accuracy of the Data). The effect of nonsampling error is not represented in these tables.
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ResearchResearch & MethodologyDiscover how the ACS produces reliable statistics for communities, how the quality is measured, and what the quality measures mean.
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Code Lists, Definitions, and AccuracyView the detailed codes and definitions for variables, statistical testing, and an explanation of sample design, methodology, and accuracy for the ACS.
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Related Information
Page Last Revised - October 8, 2021
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