Top security companies in the USA
| Company Name | Country | City | Address 1 | State/Province | Postal Code | Website | Founding Year | Yearly Revenue in U.S. Dollars | Employees Total | Business Legal Type - Description | Number of Companies in Group | Company Registration Number | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Securitas Holdings, INC. | USA | Parsippany | 9 Campus Dr | Morris | 07054-4499 | securitasinc.***** | 1989 | $1,688,202,934 | 250,000 | Corporation | 1960 | N/A |
| 2 | Securitas Services, INC. | USA | Parsippany | 9 Campus Dr | Morris | 07054-4499 | securitasinc.***** | 2003 | $1,613,596,458 | 130,000 | Corporation | 1960 | 3633493 |
| 3 | Constellis Holdings, LLC | USA | Herndon | 13530 Dulles Technology Dr Ste 500 | Fairfax County | 20171-4642 | constellis.***** | 2016 | $1,598,745,112 | 15,000 | Corporation | 56 | 4879156 |
| 4 | Southwestern Teamsters Security Fund | USA | Phoenix | 2400 W Dunlap Ave Ste 250 | Maricopa | 85021-2811 | N/A | 2009 | $1,286,313,579 | 4 | Proprietorship | N/A | 866052021 |
| 5 | Allied Security Holdings LLC | USA | Conshohocken | 161 Washington St Ste 600 | Montgomery | 19428-2083 | aus.***** | 2004 | $946,477,390 | 53,760 | Corporation | 217 | 3817944 |
| 6 | Brink's, Incorporated | USA | Richmond | 1801 Bayberry Ct Ste 400 | Richmond City | 23226-3771 | brinks.***** | 1960 | $836,959,958 | 45,000 | Corporation | 812 | 0548002 |
| 7 | The Adt Security CORPORATION | USA | Boca Raton | 1501 W Yamato Rd | Palm Beach | 33431-4438 | adt.***** | 2012 | $729,473,209 | 17,100 | Corporation | 272 | 660781524 |
| 8 | Allied Universal Manager LLC | USA | Conshohocken | 161 Washington St Ste 600 | Montgomery | 19428-2083 | aus.***** | 2016 | $600,630,625 | 250,010 | Corporation | 198 | 6037353 |
| 9 | Inter-Con Security Systems, INC. | USA | Pasadena | 210 S de Lacey Ave | Los Angeles | 91105-2048 | icsecurity.***** | 1973 | $598,036,502 | 25,000 | Corporation | 42 | 953020192 |
| 10 | Alliedbarton Security Services LLC | USA | Conshohocken | 161 Washington St Ste 600 | Montgomery | 19428-2083 | aus.***** | 2016 | $474,181,682 | 2,010 | Corporation | 198 | 3889430 |
| 11 | Universal Protection Service, LP | USA | Irvine | 450 Exchange | Orange | 92602 | aus.***** | 2009 | $471,368,968 | 10,730 | Partnership of unknown type | 363 | 330973846 |
| 12 | Johnson Controls Security Solutions LLC | USA | Boca Raton | 6600 Congress Ave | Palm Beach | 33487-1213 | johnsoncontrols.***** | 2016 | $456,009,442 | 20,020 | Corporation | 2610 | 2175945 |
| 13 | U.S. Security Associates, INC. | USA | Roswell | 200 Mansell Ct E Ste 500 | Fulton | 30076-4852 | advancedtechnicalprod.***** | 2018 | $451,541,699 | 46,750 | Corporation | 217 | 00079161 |
| 14 | Gardaworld Cash Services, INC. | USA | Boca Raton | 2000 Nw Corporate Blvd | Palm Beach | 33431 | cash.***** | 2019 | $437,236,315 | 3,000 | Corporation | 353 | 3217691 |
| 15 | Northern California General Teamsters Security Fund | USA | Stockton | 1234 W Oak St | San Joaquin | 95203-2606 | N/A | 2010 | $423,808,401 | 5 | N/A | 946073033 | |
| 16 | Securitas Security Services USA, INC. | USA | Parsippany | 9 Campus Dr | Morris | 07054-4499 | securitasinc.***** | 2002 | $417,631,887 | 100,000 | Corporation | 1960 | 3500796 |
| 17 | Signal 88, LLC | USA | Omaha | 3880 S 149th St Ste 102 | Douglas | 68144-5568 | signal88.***** | 2014 | $350,842,781 | 1,000 | Corporation | 2 | X001219374 |
| 18 | Security Service | USA | San Antonio | 4810 W Military Dr | Bexar | 78242-1415 | N/A | 2015 | $343,790,033 | 5 | N/A | N/A | |
| 19 | Sunstates Security, LLC | USA | Raleigh | 801 Corporate Center Dr Ste 300 | Wake | 27607-5243 | sunstatessecurity.***** | 1999 | $315,000,000 | 6,200 | Corporation | 11 | 2012081700100 |
| 20 | Guardsmark, LLC | USA | Santa Ana | 1551 N Tustin Ave Ste 650 | Orange | 92705-8664 | aus.***** | 2015 | $195,147,767 | 3,500 | Corporation | 363 | 0860835 |
| 21 | Dunbar Armored, INC. | USA | Hunt Valley | 50 Schilling Rd | Baltimore County | 21031-1418 | dunbararmored.***** | 2018 | $158,754,435 | 4,075 | Corporation | 812 | D00099861 |
| 22 | Contemporary Services CORPORATION | USA | Northridge South | 17101 Superior St | Los Angeles | 91325-1961 | csc-usa.***** | 1972 | $154,550,298 | 5,000 | Corporation | 34 | 952832166 |
| 23 | Metropolitan Security Services, INC. | USA | Chattanooga | 100 E 10th St Ste 400 | Hamilton | 37402-4218 | waldensecurity.***** | 1990 | $133,239,527 | 2,500 | Corporation | 10 | 621448519 |
| 24 | Marksman Security LLC | USA | Fort Lauderdale | 3230 W Commercial Blvd Ste 100 | Broward | 33309-3400 | marksmansecurity.***** | 2003 | $129,915,819 | 1,500 | Corporation | 5 | L24000327673 |
| 25 | Sizemore, INC. | USA | Augusta | 2003 Gordon Hwy | Richmond | 30909-4408 | sizemoreinc.***** | 1955 | $120,000,000 | 3,400 | Corporation | 10 | J007436 |
Showing 25 of 78,860 companies
Request Free SampleSecurity companies in the USA by state
78,860 security companies across 49 US states. Hover any state to see its share of the US security companies market.
Security companies in the USA by employee size
| Bracket | Companies | Share |
|---|---|---|
| 1-4 | 66,775 | |
| 5-9 | 5,591 | |
| 10-19 | 2,398 | |
| 20-49 | 1,897 | |
| 50-99 | 834 | |
| 100-199 | 607 | |
| 200-499 | 418 | |
| 0 or Unknown | 140 | |
| 500-999 | 113 | |
| 1.000-4.999 | 70 | |
| 5.000-9.999 | 15 | |
| 10.000+ | 2 |
Security companies in the USA by revenue
| Bracket | Companies | Share |
|---|---|---|
| 1 to 100.000 | 51,814 | |
| 100.001 to 499.999 | 18,994 | |
| 0 or Unknown | 4,196 | |
| 500.000 to 999.999 | 1,812 | |
| 1.000.000 to 4.999.999 | 1,644 | |
| 5.000.000 to 9.999.999 | 222 | |
| 10.000.000 to 49.999.999 | 133 | |
| 50.000.000 to 99.999.999 | 18 | |
| 100.000.000 to 499.999.999 | 18 | |
| 500.000.000 to 999.999.999 | 5 | |
| 1.000.000.000 or more | 4 |
About the US security companies sector
SIC and industry classification for US security companies
US security companies fall under the Services SIC division. The primary US SIC 1987 code is 7381: Detective/Guard/Security. The list above covers every active US company tagged with this code plus closely related codes, so the state and revenue breakdowns reflect the entire sector rather than a sample.
Closely related business services
Frequently asked questions about security companies in the USA
Our database tracks 78,860 active security companies across all 50 US states, sourced from Secretary of State filings and verified monthly. The exact count changes as firms register, dissolve and merge. The figure on this page reflects the most recent monthly refresh.
The state with the most security companies is Florida, followed by California, Texas, Florida and New York. The full state breakdown above shows the share each US state holds, with deeplinks to drill into a single-state directory.
US security companies are primarily covered by SIC 1987 code 7381 (Detective/Guard/Security). The list above covers every active US company tagged with this code plus closely related codes. The platform link beside each result also lets you filter by sub-code or by NAICS if you prefer.
Yes. Apply your filters (state, size, revenue, etc.) on the platform, preview the result on screen, then export the full filtered list as CSV or Excel. Larger exports (10k+ rows) are delivered by email link. Request a free sample first if you want to evaluate the data before you buy.
Every record includes the firm name, full business address, primary phone, business email (where available), website, employee size, revenue band, founding year and primary SIC / NAICS classification. Records are enriched from the US business register and re-verified monthly.
Monthly. Each refresh removes firms that have dissolved and adds new registrations from the latest Secretary of State filings. The "Last updated" line at the top of this page shows the most recent refresh date.
49 US states have at least one active security companie in our database. The state with most security companies is Florida, followed by California, Texas, Florida and New York. Use the interactive state map above to compare any two states by share of the US security companies market.
