Company lists · Data refreshed September 2026

Top 25 Interim staffing firms based in the United States

Name: Interim staffing firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 11,527 companies tracked

RevenueBase identified 11,527 interim staffing firms headquartered in the United States as of September 2026 and tracks 576,846 professional contacts across them, including 79,684 with verified work emails. New York is the largest hub.

This list covers interim staffing firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

11,527Companies

576,846Contacts tracked

79,684Verified emails

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The 25 largest interim staffing firms based in the United States

Ranked by team size

Top 25 of 11,527 interim staffing firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to interim staffing firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	KELLY	Indirect evidence	Troy, MI, United StatesHQ checked Sep 28, 2026	10001+	30,378 contacts →
	Indirect evidence “We’ve been helping organizations find the people they need longer than any other company in the world.” Source: RevenueBase Database · checked Sep 28, 2026
2	Robert Half	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 28, 2026	10001+	25,574 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
3	Manpower	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 28, 2026	10001+	22,508 contacts →
	Indirect evidence “Manpower is the global leader in contingent and permanent recruitment workforce solutions.” Source: RevenueBase Database · checked Sep 28, 2026
4	Aerotek	Indirect evidence	Hanover, MD, United StatesHQ checked Sep 28, 2026	n/a	18,268 contacts →
	Indirect evidence “From economic headwinds to talent complexities, the challenges facing North American industry are real.” Source: RevenueBase Database · checked Sep 28, 2026
5	Express Employment International	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 28, 2026	10001+	12,647 contacts →
	Partial evidence “Founded in 1983 and corporately headquartered in Oklahoma City, Express Employment International supports the Express Employment Professionals franchise and related brands.” Source: RevenueBase Database · checked Sep 28, 2026
6	Randstad USA	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	1,001-5,000	8,522 contacts →
	Indirect evidence “Randstad North America, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
7	Medical Solutions	Partial evidence	Omaha, NE, United StatesHQ checked Sep 28, 2026	1,001-5,000	5,938 contacts →
	Partial evidence “Medical Solutions is an industry frontrunner, the third largest for healthcare staffing in the country (second largest in travel nursing and fourth largest in allied health).” Source: RevenueBase Database · checked Sep 28, 2026
8	Peopleready	Indirect evidence	Tacoma, WA, United StatesHQ checked Sep 28, 2026	10001+	5,482 contacts →
	Indirect evidence “Want to be part of an award-winning team that is reimagining the way people connect with work?” Source: RevenueBase Database · checked Sep 28, 2026
9	Appleone Employment Services	Indirect evidence	Glendale, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	4,627 contacts →
	Indirect evidence “AppleOne Employment Services is a full-service employment company.” Source: RevenueBase Database · checked Sep 28, 2026
10	Spherion	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	10001+	4,263 contacts →
	Partial evidence “We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Source: RevenueBase Database · checked Sep 28, 2026
11	Select Staffing	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	10001+	3,934 contacts →
	Partial evidence “Select Staffing is a leading provider of temporary staffing and employment services in the U.S, with nationwide operations across multiple contingent staffing sectors.” Source: RevenueBase Database · checked Sep 28, 2026
12	Artech L.L.C	Partial evidence	Morristown, NJ, United StatesHQ checked Sep 28, 2026	5,001-10,000	3,674 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
13	Elwood Staffing Services, INC	Indirect evidence	Columbus, IN, United StatesHQ checked Sep 28, 2026	n/a	3,481 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
14	Cross Country Healthcare	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,420 contacts →
	Indirect evidence “Cross Country is a market-leading, tech-enabled workforce solutions platform and advisory firm with 38 years of industry experience and insight.” Source: RevenueBase Database · checked Sep 28, 2026
15	Beacon Hill	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,238 contacts →
	Partial evidence “Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.” Source: RevenueBase Database · checked Sep 28, 2026
16	Dexian	Partial evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,852 contacts →
	Partial evidence “Dexian is a leading provider of staffing, IT, and workforce solutions with nearly employees and 70 locations worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
17	Labor Finders	Strong evidence	Palm Beach Gardens, FL, United StatesHQ checked Sep 28, 2026	n/a	2,759 contacts →
	Strong evidence “Established in 1975, Labor Finders International, a franchise company, is the oldest and largest privately held industrial labor staffing company.” Source: RevenueBase Database · checked Sep 28, 2026
18	Supplemental Health Care	Partial evidence	Cottonwood Heights, UT, United StatesHQ checked Sep 28, 2026	501-1,000	2,757 contacts →
	Partial evidence “Supplemental Health Care is a leading healthcare staffing provider - but also, so much more.” Source: RevenueBase Database · checked Sep 28, 2026
19	Staff Management SMX	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	501-1,000	2,680 contacts →
	Indirect evidence “Founded in 1988, Staff Management is a recognized leader of comprehensive workforce solutions that deliver best talent, drive compliance, yield tangible savings and build…” Source: RevenueBase Database · checked Sep 28, 2026
20	Favorite Healthcare Staffing	Partial evidence	Overland Park, KS, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,490 contacts →
	Partial evidence “Favorite Healthcare Staffing, part of Acacium Group, offers a full range of workforce and staffing solutions including travel nursing, per diem, allied health, non-clinical…” Source: RevenueBase Database · checked Sep 28, 2026
21	Employbridge	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,260 contacts →
	Partial evidence “Employbridge is recognized by Staffing Industry Analysts (SIA) as America’s largest industrial staffing firm.” Source: RevenueBase Database · checked Sep 28, 2026
22	Trueblue INC	Indirect evidence	Tacoma, WA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,148 contacts →
	Indirect evidence “TrueBlue (NYSE: TBI) is a leading provider of specialized workforce solutions.” Source: RevenueBase Database · checked Sep 28, 2026
23	CSI Companies	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 28, 2026	n/a	2,120 contacts →
	Indirect evidence “Headquartered in Jacksonville, FL, CSI Companies partners with organizations nationwide to deliver solutions-focused workforce services.” Source: RevenueBase Database · checked Sep 28, 2026
24	Rose International	Strong evidence	Chesterfield, MO, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,061 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
25	Comphealth	Partial evidence	Midvale, UT, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,012 contacts →
	Partial evidence “CompHealth is one of the largest healthcare staffing companies in the United States offering permanent, locum tenens, travel and other placements for healthcare providers.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: interim staffing firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names interim staffing firms.
Partial evidence: Its own public description names part of interim staffing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name interim staffing firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 11,527 interim staffing firms based in the United States

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Interim staffing firms based in the United States at a glance

As of Sep 28, 2026

13.8%Verified-email coverage

50.0Average contacts per company

11-50Median size (employees)

3.2%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

4,246

11-50

3,366

51-200

2,269

201-500

843

501-1,000

376

1,001-5,000

284

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 11,527 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among interim staffing firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “interim staffing firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names interim staffing firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among interim staffing firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 79,684 across the full list. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Interim staffing firms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names interim staffing firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many interim staffing firms are there based in the United States?

RevenueBase identified 11,527 interim staffing firms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

KELLY, headquartered in Troy, tops this list with the largest team on record.

Which city has the most interim staffing firms?

New York leads with 367 headquartered companies, followed by Houston (311) and Dallas (242).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 79,684 verified decision-maker contacts tracked across these 11,527 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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 Smart Search, 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.