Where are Americans moving? How many of them are moving? These are important questions asked by policy researchers, demographers, and public officials, especially as the 2010 Census approaches. The Brookings Institution's William Frey recently engaged in an in-depth project to analyze existing Census and IRS data to look at recent migration trends across the United States, and his findings are quite interesting. This site includes a link to Frey's 28-page report, released in December 2009, along with several video clips of Frey talking about this work. Some of the findings include the observation that during 2007-2008, the overall U.S. migration rate reached its lowest point since World War II. Also, many core urban areas, such as San Francisco and Boston, actually saw net out-migration shrink from 2005 to 2008.