-
1600s
The New York City sheriff’s office was founded -
1635
The town of Boston began the first night watch -
1838
The Boston police -
1845
The New York police -
1886
1886 -
1900
1900 -
1920
1920 -
1930
1930 -
1940
1940 -
1950
1950 -
2000
2000 -
2001
2000 -
2002
2002 -
2003
2003 -
2004
2004 -
2005
2005 -
2006
2006 -
2007
2007 -
2008
2008 -
2009
2009 -
2010
2010