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, how directly it supports the match, 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 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 HQ checked on every row Match evidence 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. Evidence rates how directly each company's own description names per diem staffing agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	KELLYIndirect evidence	Troy, MI, United StatesHQ checked Sep 5, 2026	10001+	30,378
	“We’ve been helping organizations find the people they need longer than any other company in the world.” Source: company website · checked Sep 5, 2026
2	ManpowergroupIndirect evidence	Milwaukee, WI, United StatesHQ checked Sep 5, 2026	10001+	27,063
	“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: company website · checked Sep 5, 2026
3	ManpowerIndirect evidence	Milwaukee, WI, United StatesHQ checked Sep 5, 2026	10001+	22,508
	“Manpower is the global leader in contingent and permanent recruitment workforce solutions.” Source: company website · checked Sep 5, 2026
4	AYA HealthcarePartial evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	5,001-10,000	19,247
	“Aya Healthcare is the largest healthcare talent software and staffing company in the United States.” Source: company website · checked Sep 5, 2026
5	AerotekIndirect evidence	Hanover, MD, United StatesHQ checked Sep 5, 2026	n/a	18,268
	“From economic headwinds to talent complexities, the challenges facing North American industry are real.” Source: company website · checked Sep 5, 2026
6	Express Employment InternationalIndirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 5, 2026	10001+	12,647
	“Founded in 1983 and corporately headquartered in Oklahoma City, Express Employment International supports the Express Employment Professionals franchise and related brands.” Source: company website · checked Sep 5, 2026
7	Randstad USAIndirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	8,522
	“Randstad North America, Inc.” Source: company website · checked Sep 5, 2026
8	Medical SolutionsPartial evidence	Omaha, NE, United StatesHQ checked Sep 5, 2026	1,001-5,000	5,938
	“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: company website · checked Sep 5, 2026
9	PeoplereadyIndirect evidence	Tacoma, WA, United StatesHQ checked Sep 5, 2026	10001+	5,482
	“Want to be part of an award-winning team that is reimagining the way people connect with work?” Source: company website · checked Sep 5, 2026
10	VOLTIndirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	4,831
	“Volt (an Innova Solutions affiliate) is a multi-award winning global workforce solutions provider that propels businesses and careers forward with expert momentum.” Source: company website · checked Sep 5, 2026
11	Appleone Employment ServicesIndirect evidence	Glendale, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	4,627
	“AppleOne Employment Services is a full-service employment company.” Source: company website · checked Sep 5, 2026
12	SpherionPartial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	10001+	4,263
	“We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Source: company website · checked Sep 5, 2026
13	Select StaffingPartial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	10001+	3,934
	“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: company website · checked Sep 5, 2026
14	Artech L.L.CPartial evidence	Morristown, NJ, United StatesHQ checked Sep 5, 2026	5,001-10,000	3,674
	“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: company website · checked Sep 5, 2026
15	Magnit GlobalIndirect evidence	Folsom, CA, United StatesHQ checked Sep 5, 2026	10001+	3,586
	“Magnit™ (formerly PRO Unlimited) is a global leader and pioneer in contingent workforce management.” Source: company website · checked Sep 5, 2026
16	Elwood Staffing Services, INCIndirect evidence	Columbus, IN, United StatesHQ checked Sep 5, 2026	n/a	3,481
	“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: company website · checked Sep 5, 2026
17	Cross Country HealthcareIndirect evidence	Boca Raton, FL, United StatesHQ checked Sep 5, 2026	1,001-5,000	3,420
	“Cross Country is a market-leading, tech-enabled workforce solutions platform and advisory firm with 38 years of industry experience and insight.” Source: company website · checked Sep 5, 2026
18	Beacon HillPartial evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	1,001-5,000	3,238
	“Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.” Source: company website · checked Sep 5, 2026
19	Allegis GroupIndirect evidence	Hanover, MD, United StatesHQ checked Sep 5, 2026	10001+	3,103
	“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: company website · checked Sep 5, 2026
20	DexianPartial evidence	Mclean, VA, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,852
	“Dexian is a leading provider of staffing, IT, and workforce solutions with nearly employees and 70 locations worldwide.” Source: company website · checked Sep 5, 2026
21	Labor FindersPartial evidence	Palm Beach Gardens, FL, United StatesHQ checked Sep 5, 2026	n/a	2,759
	“Established in 1975, Labor Finders International, a franchise company, is the oldest and largest privately held industrial labor staffing company.” Source: company website · checked Sep 5, 2026
22	Supplemental Health CarePartial evidence	Cottonwood Heights, UT, United StatesHQ checked Sep 5, 2026	501-1,000	2,757
	“Supplemental Health Care is a leading healthcare staffing provider - but also, so much more.” Source: company website · checked Sep 5, 2026
23	Staff Management SMXIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	501-1,000	2,680
	“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: company website · checked Sep 5, 2026
24	Favorite Healthcare StaffingStrong evidence	Overland Park, KS, United StatesHQ checked Sep 5, 2026	5,001-10,000	2,490
	“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: company website · checked Sep 5, 2026
25	EmploybridgePartial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,260
	“Employbridge is recognized by Staffing Industry Analysts (SIA) as America’s largest industrial staffing firm.” Source: company website · checked Sep 5, 2026

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

11-50Median size (employees)

New YorkLargest hub · 272 HQs

173,848Contacts with mobile numbers

Sep 5, 2026Data 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+

Verified emails by last verification

0–30

75,661

31–60

5,391

61–90

90–180

180+

891

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 evidence 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 SmartSearch, 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.
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 an evidence 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

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 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.