Company lists · Data refreshed October 2026

Top 25 IT contractor agencies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 17, 2026 14,579 companies tracked

RevenueBase identified 14,579 company matches for IT contractor agencies associated with the United States as of October 2026 and tracks 620,883 professional contacts across them, including 92,492 with verified work emails. New York is the largest hub.

This list covers company matches for IT contractor 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 October 17, 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 Oct 17, 2026 How this list was built

14,579Companies

620,883Contacts tracked

92,492Verified emails

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The 25 largest IT contractor agencies based in the United States

Ranked by team size

Top 25 of 14,579 company matches for IT contractor agencies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 17, 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	KELLY	Exact match	Troy, MI, United StatesHQ recorded Oct 17, 2026	10001+	32,254 contacts →
	Exact match “We’ve been helping organizations find the people they need longer than any other company in the world.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
2	Robert Half	Exact match	Menlo Park, CA, United StatesHQ recorded Oct 17, 2026	10001+	27,299 contacts →
	Exact match “At Robert Half, we prioritize your security-if you believe you've encountered a scam or fraudulent recruiter, please report it immediately to All Robert Half recruiters…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
3	Manpower	Exact match	Milwaukee, NV, United StatesHQ recorded Oct 17, 2026	10001+	24,637 contacts →
	Exact match “Manpower is the global leader in contingent and permanent recruitment workforce solutions.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
4	Insight Global	Exact match	Atlanta, GA, United StatesHQ recorded Oct 17, 2026	n/a	17,083 contacts →
	Exact match “Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
5	Express Employment International	Exact match	Oklahoma City, OK, United StatesHQ recorded Oct 17, 2026	10001+	13,328 contacts →
	Exact match “Founded in 1983 and corporately headquartered in Oklahoma City, Express Employment International supports the Express Employment Professionals franchise and related brands.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
6	Randstad USA	Exact match	Atlanta, GA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	9,266 contacts →
	Exact match “Randstad North America, Inc.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
7	Kforce INC	Exact match	Tampa, FL, United StatesHQ recorded Oct 17, 2026	1,001-5,000	6,478 contacts →
	Exact match “Kforce is a solutions firm specializing in technology, finance and accounting, and professional staffing services.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
8	Peopleready	Exact match	Tacoma, WA, United StatesHQ recorded Oct 17, 2026	10001+	5,470 contacts →
	Exact match “Want to be part of an award-winning team that is reimagining the way people connect with work?” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
9	Lancesoft, INC	Exact match	Herndon, VA, United StatesHQ recorded Oct 17, 2026	5,001-10,000	5,107 contacts →
	Exact match “Established in LanceSoft is a pioneer in delivering top-notch Global Workforce Solutions and IT Services to a diverse clientele.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
10	Tradesmen International	Exact match	Macedonia, OH, United StatesHQ recorded Oct 17, 2026	10001+	5,046 contacts →
	Exact match “Founded in 1992, Tradesmen International is North America’s premier resource for proven skilled craftsmen and labor consulting services.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
11	Appleone Employment Services	Exact match	Glendale, CA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	4,897 contacts →
	Exact match “AppleOne Employment Services is a full-service employment company.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
12	Spherion	Exact match	Atlanta, GA, United StatesHQ recorded Oct 17, 2026	10001+	4,647 contacts →
	Exact match “We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
13	Select Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Oct 17, 2026	10001+	4,502 contacts →
	Exact match “Select Staffing is a leading provider of temporary staffing and employment services in the U.S, with nationwide operations across multiple contingent staffing sectors.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
14	Artech L.L.C	Exact match	Morristown, NJ, United StatesHQ recorded Oct 17, 2026	5,001-10,000	3,788 contacts →
	Exact match “Artech is the largest Women-Owned IT Staffing Firm in the U.S, with 34+ years of experience powering workforce transformation for Fortune 500 companies and public-sector…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
15	Elwood Staffing Services, INC	Exact match	Columbus, IN, United StatesHQ recorded Oct 17, 2026	n/a	3,700 contacts →
	Exact match “Whether you're looking to find your next great employee, make your next career move, or help a friend find a new job, you can trust that Elwood puts its passion and expertise into…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
16	Beacon Hill	Exact match	Boston, MA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	3,397 contacts →
	Exact match “Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
17	Dexian	Exact match	Mclean, VA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	3,012 contacts →
	Exact match “Dexian is a leading provider of staffing, IT, and workforce solutions with nearly employees and 70 locations worldwide.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
18	Oxford Global Resources	Exact match	Beverly, MA, United StatesHQ recorded Oct 17, 2026	501-1,000	2,637 contacts →
	Exact match “Oxford Global Resources delivers tailored solutions for any technical challenges you are facing using our partnership-first approach.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
19	24 Seven Talent	Exact match	NY, United StatesHQ recorded Oct 17, 2026	n/a	2,619 contacts →
	Exact match “24 Seven partners with companies to get marketing, creative, and digital work done by providing the right talent, innovation, and insights.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
20	The Judge Group	Exact match	Wayne, PA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,298 contacts →
	Exact match “The Judge Group is an international leader in business technology consulting, talent solutions, and learning and development.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
21	Airswift	Exact match	Houston, TX, United StatesHQ recorded Oct 17, 2026	501-1,000	2,219 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 · Oct 17, 2026 · View company records in RevenueBase
22	Rose International	Exact match	Chesterfield, MO, United StatesHQ recorded Oct 17, 2026	5,001-10,000	2,191 contacts →
	Exact match “Rose International is a leading provider of Staffing and Total Talent Solutions to corporations and government agencies, employing thousands of people across the U.S, Canada and…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
23	Trueblue INC	Exact match	Tacoma, WA, United StatesHQ recorded Oct 17, 2026	1,001-5,000	2,183 contacts →
	Exact match “TrueBlue (NYSE: TBI) is a leading provider of specialized workforce solutions.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
24	Remedy Intelligent Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Oct 17, 2026	10001+	2,117 contacts →
	Exact match “Remedy Intelligent Staffing is a nationwide professional staffing organization with more than 50 years of recruiting and selection expertise to match job candidates with positions…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
25	Addison Group	Exact match	Chicago, IL, United StatesHQ recorded Oct 17, 2026	1,001-5,000	1,972 contacts →
	Exact match “Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…” Recorded in the RevenueBase company graph · Oct 17, 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 “IT contractor 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 14,579 IT contractor agencies based in the United States

See the full list, filter by size, metro and specialty, and access 92,492 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT contractor agencies based in the United States at a glance

As of Oct 17, 2026

14.9%Verified-email coverage

42.6Average contacts per company

11-50Median size (employees)

3.7%Largest-city concentration · New York

Oct 17, 2026Page data refreshed

Companies by employee count

1-10

5,214

11-50

4,756

51-200

2,941

201-500

915

501-1,000

362

1,001-5,000

260

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 14,579 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 “IT contractor 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 92,492 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 October 17, 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.

IT contractor 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 “IT contractor agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 14,579 company matches for IT contractor agencies associated with the United States as of October 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?

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

Which city has the most IT contractor agencies?

New York leads with 534 company records, followed by Houston (412) and Dallas (314).

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 92,492 professional contacts with verified work emails tracked across these 14,579 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 October 17, 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.