Private Security Companies in the United States

	Founded	Employees	Headquarters Location
Allied Universal	2016	10000+	Irvine, US
Defense Counterintelligence and Security Agency (DCSA)	1972	10000+	Quantico, US
Triple Canopy (A Constellis Company)	2003	10000+	Herndon, US
The GEO Group, Inc.	1984	10000+	Boca Raton, US
AlliedBarton Security Services	1957	10000+	US
Constellis	-	10000+	Herndon, US
Convergint	2001	1.0K - 5.0K	Hoffman Estates, US
Akal Security	1980	100 - 250	Espanola, US
Andrews International	1988	10000+	Burbank, US
ACADEMI (A Constellis Company)	2010	10000+	Moyock, US
Command Security Corporation	1980	1.0K - 5.0K	Herndon, US
ADT Authorized Dealer Program	1874	10000+	Aurora, US
American Asset Protection®	1992	10000+	Los Angeles, US
BGS Security Division	1993	10000+	Old Bridge, US
Brosnan Risk Consultants	1996	5000-10000	Pearl River, US
Admiral Security Services	1976	5000-10000	Bethesda, US
Rapiscan	1958	5000-10000	Billerica, US
Arrow Security	1985	5000-10000	Smithtown, US
Tarian	2022	5000-10000	Louisville, US
Tyco Integrated Security	1874	100 - 250	Boca Raton, US
Elite Security & Staffing	1995	5000-10000	San Diego, US
Centerra Group	1960	5000-10000	Herndon, US
ADI Global Distribution	-	1000-5000	Melville, US
Titan Security Group	1994	1.0K - 5.0K	Chicago, US
Andy Frain Services	1924	1.0K - 5.0K	Aurora, US
Elite Investigations	1980	1.0K - 5.0K	Yonkers, US
Chenega Security SBU	2012	1000-5000	Chantilly, US
Blackwater USA	-	1000-5000	US
Ascent Media	-	1000-5000	Santa Monica, US
Cypress Private Security	1996	1.0K - 5.0K	San Francisco, US
American Security	1975	1000-5000	Greenville, US
CPS Security	1989	1.0K - 5.0K	Long Beach, US
DK Security	1995	25 - 100	Grand Rapids, US
Cambridge Security Services Corp	1984	500 - 1.0K	Fort Lauderdale, US
Bowles Corporate Services, Inc.	1992	1000-5000	Clifton, US
DECO	1986	100 - 250	Arlington, US
Pavion	1969	250 - 500	Chantilly, US
Apollo International an Allied Universal Company	1990	1000-5000	Walpole, US
Doyle Security Services, Inc. (DSS)	2005	1000-5000	Rockville Centre, US
Custom Risk Solutions -Division of SOS Security LLC	1969	1000-5000	Norcross, US
DSI Security Services	1969	1.0K - 5.0K	Dothan, US
Cam Connections, a division of Protection 1/ADT	1998	25 - 100	Lakeland, US
Nation Security	2000	1000-5000	Miami, US
American Security Associates, Inc.	1999	1000-5000	Atlanta, US
Chesley Brown International	1990	1000-5000	Smyrna, US
Blue Star Security	2009	1000-5000	Des Plaines, US
American Services, Inc.	1975	25 - 100	US
Acadian Total Security	1999	1000-5000	Lafayette, US
Cascadia Global Security / Cascadia Off-Duty	2018	1000-5000	San Antonio , US
BCI Security Services	1991	1000-5000	Los Angeles, US
AMK9 - American K-9 Detection Services LLC	2003	250 - 500	Moyock, US
CPI Security	1991	500 - 1.0K	Charlotte, US
Bay Alarm Company	1946	25 - 100	Concord, US
CoventBridge Group	-	500-1000	Jacksonville, US
ADT Security Services	1874	10K - 50K	Boca Raton, US
DTiQ	1998	250 - 500	Marlborough, US
American Guard Services, Inc.	1997	500-1000	Gardena, US
Citiguard	1998	500-1000	Woodland Hills, US
Affiliated Monitoring	1977	25 - 100	Union, US
Analogic	1967	1.0K - 5.0K	Peabody, US
ASG Security	2002	25 - 100	US
Devcon Security	2004	25 - 100	Hollywood, US
BTI Security	2000	500-1000	Rockville, US
Torres AES	2003	500-1000	Falls Church, US
Bower	-	500-1000	Palm Desert, US
Akima Global Services, LLC	-	500-1000	Herndon, US
Trident Security Services, Inc.	2001	25 - 100	Tempe, US
Diversified Protection Corporation	1999	500-1000	Daniel Island, US
Blackstone Security Services, Inc.	1993	500 - 1.0K	Phoenix, US
ADC LTD NM	1985	500 - 1.0K	Albuquerque, US
AmeriGuard Security Services, Inc.	2000	1 - 25	Fresno, US
ACTS-Aviation Security	2001	1000-5000	Des Plaines, US
Clarion Security	2010	250 - 500	Memphis, US
TriCorps	2000	500-1000	Oklahoma City, US
Elite Guard Security Services	1983	25 - 100	Sunny Isles, US
AllNOneSecurity	2001	100 - 250	Atlanta, US
Twin City Security, Inc.	1972	500-1000	Denver, US
Top Guard Security	1996	25 - 100	Norfolk, US
American Security Services, LLC	1986	25 - 100	Forest Park, US
Arms Security Corporation	2010	500-1000	Chicago, US
BCM Security Services	-	500-1000	Wilkes Barre, US
Associated Protective Service, Inc. (APS)	2008	500-1000	Nashville, US
The Robison Group	1998	100 - 250	Troy, US
Advantage Investigations	1998	200-500	Kannapolis, US
Guardian Access Solutions	1987	100 - 250	Nashville-Davidson, US
Triumph Protection Group	2013	25 - 100	Vacaville, US
Trident Security Solutions	2017	200-500	Huntsville, US
Blue Knight Security & Patrol	2020	200-500	Gold River, US
Alante Security Group Inc.	-	25 - 100	Westbury, US
Edifice Protection Group	-	200-500	New Orleans, US
T&M USA, LLC	1981	200-500	New York, US
Tech Systems Inc. (TSi)	1987	200-500	Buford, US
Sign In Compliance (formerly ThreatSwitch)	2017	200-500	Charlotte, US
Allied Barton Securtiy	-	200-500	Stamford, US
Alliance Security	2003	250 - 500	Providence, US
Datawatch Systems	1981	100 - 250	Bethesda, US
Concentric	2005	200-500	Kirkland, US
AMAG Technology	1971	100 - 250	Hawthorne, US
Titan Global, LLC	-	100 - 250	US

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