Domestic Migration Flows for States from the 2005 ACS

March 31, 2007
Kin Koerber


Since 2000, the American Community Survey (ACS) has been providing 1-year inmigration estimates for states; but outmigration, net migration and flow estimates have not been available since Census 2000. With the full implementation of the 2005 ACS, statistically reliable estimates can now be produced that provide a larger picture of internal migration within the United States and Puerto Rico. This paper will examine the reasonableness and variability of migration estimates between individual states, the District of Columbia, and Puerto Rico from the 2005 American Community Survey.

Besides examining the migration for the population as a whole, the paper will also go into detail about the migration patterns for the subpopulations of the older population; the young, single, well educated; and the foreign born. These subpopulations have different migration patterns from one another and from the population as a whole.

The analysis will include comparisons with Census state Intercensal Population Estimates (IPE) and Census 2000 data. Comparisons between the Census 2000 and ACS data are limited to flow trends because the Census previous residence question covers a 5-year period while the ACS migration question covers a 1-year period.

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March 15, 2007
June 14, 2007