Company lists · Data refreshed September 2026

Top 25 Per diem staffing agencies based in the United States

Name: Per diem 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 5, 2026 9,684 companies tracked

RevenueBase identified 9,684 per diem staffing agencies headquartered in the United States as of September 2026 and tracks 595,445 professional contacts across them, including 82,032 with verified work emails and 173,848 with mobile numbers. New York is the largest hub.

This list covers per diem staffing agencies 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 5, 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 5, 2026 86% judged on-target in blind review

9,684Companies

595,445Contacts tracked

82,032Verified emails

173,848Mobile numbers

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The 25 largest per diem staffing agencies based in the United States

Ranked by team size

Top 25 of 9,684 per diem staffing agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to per diem staffing agencies: 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 5, 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 5, 2026
2	Manpowergroup	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 5, 2026	10001+	27,063 contacts →
	Indirect evidence “ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing and…” Source: RevenueBase Database · checked Sep 5, 2026
3	Manpower	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 5, 2026	10001+	22,508 contacts →
	Indirect evidence “Manpower is the global leader in contingent and permanent recruitment workforce solutions.” Source: RevenueBase Database · checked Sep 5, 2026
4	AYA Healthcare	Partial evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	5,001-10,000	19,247 contacts →
	Partial evidence “Aya Healthcare is the largest healthcare talent software and staffing company in the United States.” Source: RevenueBase Database · checked Sep 5, 2026
5	Aerotek	Indirect evidence	Hanover, MD, United StatesHQ checked Sep 5, 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 5, 2026
6	Express Employment International	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 5, 2026	10001+	12,647 contacts →
	Indirect 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 5, 2026
7	Randstad USA	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	8,522 contacts →
	Indirect evidence “Randstad North America, Inc.” Source: RevenueBase Database · checked Sep 5, 2026
8	Medical Solutions	Partial evidence	Omaha, NE, United StatesHQ checked Sep 5, 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 5, 2026
9	Peopleready	Indirect evidence	Tacoma, WA, United StatesHQ checked Sep 5, 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 5, 2026
10	VOLT	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	4,831 contacts →
	Indirect evidence “Volt (an Innova Solutions affiliate) is a multi-award winning global workforce solutions provider that propels businesses and careers forward with expert momentum.” Source: RevenueBase Database · checked Sep 5, 2026
11	Appleone Employment Services	Indirect evidence	Glendale, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	4,627 contacts →
	Indirect evidence “AppleOne Employment Services is a full-service employment company.” Source: RevenueBase Database · checked Sep 5, 2026
12	Spherion	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 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 5, 2026
13	Select Staffing	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 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 5, 2026
14	Artech L.L.C	Partial evidence	Morristown, NJ, United StatesHQ checked Sep 5, 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 5, 2026
15	Magnit Global	Indirect evidence	Folsom, CA, United StatesHQ checked Sep 5, 2026	10001+	3,586 contacts →
	Indirect evidence “Magnit™ (formerly PRO Unlimited) is a global leader and pioneer in contingent workforce management.” Source: RevenueBase Database · checked Sep 5, 2026
16	Elwood Staffing Services, INC	Indirect evidence	Columbus, IN, United StatesHQ checked Sep 5, 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 5, 2026
17	Cross Country Healthcare	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 5, 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 5, 2026
18	Beacon Hill	Partial evidence	Boston, MA, United StatesHQ checked Sep 5, 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 5, 2026
19	Allegis Group	Indirect evidence	Hanover, MD, United StatesHQ checked Sep 5, 2026	10001+	3,103 contacts →
	Indirect evidence “As the global leader in talent solutions, we take pride in what we do, connecting great people to great opportunities, helping businesses win and careers soar.” Source: RevenueBase Database · checked Sep 5, 2026
20	Dexian	Partial evidence	Mclean, VA, United StatesHQ checked Sep 5, 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 5, 2026
21	Labor Finders	Partial evidence	Palm Beach Gardens, FL, United StatesHQ checked Sep 5, 2026	n/a	2,759 contacts →
	Partial 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 5, 2026
22	Supplemental Health Care	Partial evidence	Cottonwood Heights, UT, United StatesHQ checked Sep 5, 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 5, 2026
23	Staff Management SMX	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 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 5, 2026
24	Favorite Healthcare Staffing	Strong evidence	Overland Park, KS, United StatesHQ checked Sep 5, 2026	5,001-10,000	2,490 contacts →
	Strong 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 5, 2026
25	Employbridge	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 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 5, 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: per diem staffing agencies. 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 per diem staffing agencies.
Partial evidence: Its own public description names part of per diem staffing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name per diem staffing agencies. 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 9,684 per diem staffing agencies based in the United States

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Per diem staffing agencies based in the United States at a glance

As of Sep 5, 2026

13.8%Verified-email coverage

29.2%Mobile-number coverage

61.5Average contacts per company

11-50Median size (employees)

2.8%Largest-city concentration · New York

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

3,226

11-50

2,744

51-200

2,046

201-500

827

501-1,000

388

1,001-5,000

305

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

75,6610–30

5,39131–60

6561–90

2490–180

891180+

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 per diem staffing agencies, 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 “per diem staffing agencies”. 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 per diem staffing agencies), 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 per diem staffing agencies, 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, 82,032 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 5, 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.

Per diem staffing agencies 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 per diem staffing agencies, 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 per diem staffing agencies are there based in the United States?

RevenueBase identified 9,684 per diem staffing agencies 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 per diem staffing agencies?

New York leads with 272 headquartered companies, followed by Houston (269) and Dallas (187).

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 82,032 verified decision-maker contacts tracked across these 9,684 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 5, 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.