Immigration statistics

Statistical information provided below is available in greater detail at the Office of Immigration Statistics within the U.S. Department of Homeland Security.

• Nonimmigrant admissions

  2009	162.6 million
  2008	175.4 million
  2007	171 million
  2006	175.1 million
  2005	175.3 million
  2004	180.2 million
  2003	180.5 million
  2002	193.2 million
  2001	231.4 million

• Aliens who became legal permanent residents

  2009	1,130,818
  2008	1,107,126
  2007	1,052,415
  2006	1,266,264
  2005	1,122,373
  2004	957,883

• Naturalizations of foreign nationals

  2009	743,715
  2008	1,046,539
  2007	660,477
  2006	702,589
  2005	604,280
  2004	537,151

• Unauthorized immigrants living in the United States

  January 2009	approximately 10.8 million
  January 2008	approximately 11.6 million
  January 2007	approximately 11.8 million
  January 2006	approximately 11.3 million
  January 2005	approximately 10.5 million
  January 2000	approximately 8.5 million

• Detentions

  2004 detained by DHS	estimated 1,241,089 foreign nationals from 182 countries
  2004 detained by ICE	235,247 foreign nationals

• Removals by Department of Homeland Security from the United States

  2009	393,289 foreign nationals
  2008	358,886 foreign nationals
  2007	319,382 foreign nationals
  2006	280,974 foreign nationals including 95,752 criminals
  2005	241,778 foreign nationals including 90,899 criminals
  2004	236,932 foreign nationals including 90,903 criminals

Statistical information provided below is available in greater detail at the Bureau of Transportation Statistics within the U.S. Department of Transportation.

• Border crossings by train passengers

  2009	220,020
  2008	260,609
  2007	253,552
  2006	266,187
  2005	253,591
  2004	236,141

• Border crossings by bus passengers

  2009	4,932,607
  2008	6,859,935
  2007	7,073,686
  2006	6,686,385
  2005	7,024,637
  2004	7,278,897

• Border crossings by personal vehicle passengers

  2009	194,525,561
  2008	215,383,063
  2007	222,782,079
  2006	242,241,051
  2005	248,568,824
  2004	254,206,275

• Border crossings by pedestrians

  2009	41,694,587
  2008	45,341,306
  2007	49,980,029
  2006	46,785,153
  2005	46,434,951
  2004	48,910,252

• Air passenger travel arrivals in the United States (except Canada)

  2009	65,245,000
  2008	68,221,000
  2007	65,411,000
  2006	62,951,000