Company lists · Data refreshed September 2026

Top 25 Clearance IT staffing agencies based in the United States

Name: Clearance IT staffing agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 3,463 companies tracked

RevenueBase identified 3,463 company matches for clearance IT staffing agencies associated with the United States as of September 2026 and tracks 114,604 professional contacts across them, including 19,198 with verified work emails. New York is the largest hub.

This list covers company matches for clearance IT staffing agencies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

3,463Companies

114,604Contacts tracked

19,198Verified emails

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The 25 largest clearance IT staffing agencies based in the United States

Ranked by team size

Top 25 of 3,463 company matches for clearance IT staffing agencies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Peraton	Exact match	Reston, VA, United StatesHQ recorded Sep 27, 2026	10001+	10,793 contacts →
	Exact match “At Peraton, we're at the forefront of delivering the next big thing every day.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Mantech	Exact match	Herndon, VA, United StatesHQ recorded Sep 27, 2026	5,001-10,000	9,697 contacts →
	Exact match “MANTECH is more than a technology company.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Airswift	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	501-1,000	2,128 contacts →
	Exact match “We support STEM professionals looking for jobs with exceptional firms in the technology and engineering sectors.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Chenega Corporation	Exact match	Anchorage, AK, United StatesHQ recorded Sep 27, 2026	5,001-10,000	1,853 contacts →
	Exact match “As the most successful Alaska Native village corporation, Chenega figures prominently in the diverse government services contracting marketplace supporting defense, intelligence…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Loyal Source Government Services	Exact match	Orlando, FL, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,759 contacts →
	Exact match “Loyal Source is an Orlando-based workforce solutions provider dedicated to delivering elite services worldwide.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Infotree Global Solutions	Exact match	Plymouth, MI, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,545 contacts →
	Exact match “Infotree Global was founded in 2002 in a small office in Canton, MI, Infotree Global had a clear mission; To bring the world’s best talent together with the greatest companies…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	ALKU	Exact match	Andover, MA, United StatesHQ recorded Sep 27, 2026	201-500	1,480 contacts →
	Exact match “ALKU® is a highly specialized consulting services firm focused on deploying highly skilled consulting resources in the areas of Technologies, HCIT, Life Sciences, and Government…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Brooksource	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,480 contacts →
	Exact match “At Brooksource, relationships are at the center of everything we do.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	System ONE	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 27, 2026	5,001-10,000	1,386 contacts →
	Exact match “System One is a leading provider of specialized, highly technical outsourced services, workforce solutions, staffing, and recruiting to critical infrastructure, technology, life…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	TRS Staffing Solutions	Exact match	Greenville, United StatesHQ recorded Sep 27, 2026	201-500	1,187 contacts →
	Exact match “TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Motion Recruitment	Exact match	Boston, MA, United StatesHQ recorded Sep 27, 2026	501-1,000	1,150 contacts →
	Exact match “Motion Recruitment, a Kelly® Company, delivers IT Talent Solutions for Contract, Direct Hire, Managed Solutions and Statement of Work to all of North America from our 21 delivery…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	The MIL Corporation	Exact match	Bowie, MD, United StatesHQ recorded Sep 27, 2026	501-1,000	941 contacts →
	Exact match “Established in 1980, MIL provides innovative cyber, engineering, financial, and information technology services to the federal government.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Imcs Group	Exact match	Irving, TX, United StatesHQ recorded Sep 27, 2026	201-500	881 contacts →
	Exact match “IMCS Group is an IT, Healthcare, and Professional Staffing Company that helps Enterprises optimize the business value of their Staffing investments and enables them to achieve…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Signature Consultants	Exact match	Fort Lauderdale, FL, United StatesHQ recorded Sep 27, 2026	1,001-5,000	783 contacts →
	Exact match “We’re stronger together.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Integrated Resources, INC IRI	Exact match	Edison, NJ, United StatesHQ recorded Sep 27, 2026	501-1,000	762 contacts →
	Exact match “Integrated Resources Inc.(IRI) is a professional staffing firm specializing in contract, consulting & full time positions in the area of Information Technology, Life Science and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	JSG Johnson Service Group, INC	Exact match	Westmont, IL, United StatesHQ recorded Sep 27, 2026	5,001-10,000	757 contacts →
	Exact match “Johnson Service Group, Inc.(JSG) is a leader in the staffing and consulting services industry, with 40 years of experience investing in people and companies.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Cynet Systems	Exact match	Sterling, VA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	732 contacts →
	Exact match “Headquartered in Washington DC Metro Area, Cynet Systems is a top talent supplier for companies across North America.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Consultadd INC	Exact match	New York, NY, United StatesHQ recorded Sep 27, 2026	201-500	685 contacts →
	Exact match “Consultadd is a leading IT staffing and workforce solutions partner, helping U.S.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Applied Research Solutions	Exact match	Beavercreek, OH, United StatesHQ recorded Sep 27, 2026	501-1,000	597 contacts →
	Exact match “Started in 2012, ARS is a growing business serving the Department of Defense and Intelligence Community.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Codeforce 360	Exact match	Alpharetta, GA, United StatesHQ recorded Sep 27, 2026	501-1,000	591 contacts →
	Exact match “CodeForce 360 is a growing IT staffing company which thrives on a seasoned team of IT experts, a palpable international presence, and the ability to leverage the best of…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Volt Technical Resources	Exact match	Orange, CA, United StatesHQ recorded Sep 27, 2026	5,001-10,000	584 contacts →
	Exact match “A Six Sigma Company ~61 years in the industry ~Nationwide 4 million+ candidate database ~Fortune Company ~Extensive E-Recruiting capabilities ~Reference and Employment check…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	QSI	Exact match	Golden Valley, MN, United StatesHQ recorded Sep 27, 2026	51-200	578 contacts →
	Exact match “Information Technology takes talented people.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Prestige Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Sep 27, 2026	51-200	552 contacts →
	Exact match “Prestige Staffing is an award-winning, nationally recognized leader in professional staff augmentation serving local IT, Healthcare, and Accounting & Finance clients as well as…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Tech USA	Exact match	Millersville, MD, United StatesHQ recorded Sep 27, 2026	501-1,000	541 contacts →
	Exact match “A premier provider of staffing solutions, Tech USA is in the top 1% of the Recruiting Industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Exact Staff	Exact match	Calabasas, CA, United StatesHQ recorded Sep 27, 2026	51-200	528 contacts →
	Exact match “Exact Staff, founded in 1996, has evolved into a national staffing leader, celebrated for winning the HIREVets Gold Award from the U.S.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “clearance IT staffing agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 3,463 clearance IT staffing agencies based in the United States

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Clearance IT staffing agencies based in the United States at a glance

As of Sep 27, 2026

16.8%Verified-email coverage

33.1Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

1,115

11-50

1,242

51-200

783

201-500

199

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,463 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “clearance IT staffing agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 19,198 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Clearance IT staffing agencies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “clearance IT staffing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many clearance IT staffing agencies are there based in the United States?

RevenueBase identified 3,463 company matches for clearance IT staffing agencies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Peraton tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most clearance IT staffing agencies?

New York leads with 124 company records, followed by Houston (79) and Dallas (78).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 19,198 professional contacts with verified work emails tracked across these 3,463 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.