Migration Data Users Guide 2010–2011DOC 2009–2010DOC 2008–2009DOC 2007–2008DOC 2006–2007DOC 2005–2006DOC 2004–2005 U.S. Population Migration Data: Strengths and LimitationsDOC Return to Migration Data Return to County-to-County Migration Database Files Return to State-to-State Migration Database Files