Size of the Foreign-Born Population and Foreign Born as a Percentage of the Total Population, for the United States: 1850 to 2006
Source: The 2006 data are from the 2006 American Community Survey, the 2000 data are from Census 2000 (see www.census.gov). All other data are from Gibson, Campbell and Emily Lennon, US Census Bureau, Working Paper No. 29, Historical Census Statistics on the Foreign-Born Population of the United States: 1850 to 1990, US Government Printing Office, Washington, DC, 1999. This report is available on-line.