Company lists · Data refreshed September 2026

Top 25 Professional staffing agencies based in Chicago, United States

Name: Professional staffing agencies based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 376 companies tracked

RevenueBase identified 376 professional staffing agencies headquartered in Chicago, United States as of September 2026 and tracks 16,343 professional contacts across them, including 2,706 with verified work emails. New York is the largest hub.

This list covers professional staffing agencies headquartered in Chicago, 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

376Companies

16,343Contacts tracked

2,706Verified emails

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The 25 largest professional staffing agencies based in Chicago, United States

Ranked by team size

Top 25 of 376 professional staffing agencies based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names professional 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	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
2	Addison GroupIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,840
	“Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…” Source: company website · checked Sep 5, 2026
3	MEDIXIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	501-1,000	1,753
	“Medix provides workforce solutions to clients and creates opportunity for talent in the Healthcare, Life Sciences, Engineering and Technology fields.” Source: company website · checked Sep 5, 2026
4	Elite Staffing INCIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	10001+	1,661
	Source: company website · checked Sep 5, 2026
5	PeoplescoutIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,173
	“PeopleScout, a TrueBlue company, is a global talent solutions leader.” Source: company website · checked Sep 5, 2026
6	Lasalle NetworkIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	201-500	605
	“Keeping business transformations on track is essential to maintaining market advantage.” Source: company website · checked Sep 5, 2026
7	Artisan TalentPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	n/a	374
	“We're a digital, creative, and marketing staffing agency doing things a little differently.” Source: company website · checked Sep 5, 2026
8	Connect Search, LLCPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	310
	“Connect Search, LLC is a boutique staffing firm founded by a group of partners who share the same vision and are all recruiters at heart.” Source: company website · checked Sep 5, 2026
9	Crystal Equation CorporationIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	201-500	262
	“Crystal Equation (CE) is a certified Women-Owned Business that empowers people and advances technology initiatives by building trust.” Source: company website · checked Sep 5, 2026
10	The Jacobson GroupIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	251
	“The Jacobson Group is the leading provider of talent to the insurance industry.” Source: company website · checked Sep 5, 2026
11	Synectics INCIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	201-500	248
	Source: company website · checked Sep 5, 2026
12	Advantage XPOPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	237
	“Ranked among HRO Today's Top 13 global recruiting firms, Advantage xPO's objective is clear-cut: the perfect alignment of talent with clients' staffing needs.” Source: company website · checked Sep 5, 2026
13	Advanced ResourcesPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	n/a	223
	“Over our 30+ year history, Advanced Resources has supported thousands of clients as they tackle their human capital challenges by providing staffing, direct hire, and consulting…” Source: company website · checked Sep 5, 2026
14	BrilliantPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	162
	“About Brilliant® Brilliant is an award-winning staffing and recruiting firm that provides direct-hire and contract staffing services in accounting, finance, technology, and…” Source: company website · checked Sep 5, 2026
15	City StaffingPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	1,001-5,000	148
	“City Staffing partners with organizations that need talent fast and at scale-without sacrificing quality.” Source: company website · checked Sep 5, 2026
16	HirewellIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	134
	“Hirewell is a global talent solutions provider that combines domain expert recruiters with modern hiring strategy to deliver people who make a difference.” Source: company website · checked Sep 5, 2026
17	Mack & Associates, LTDStrong evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	11-50	132
	“For over 25 years, Mack & Associates has been the boutique staffing firm of choice for Chicagoland’s top professional services firms.” Source: company website · checked Sep 5, 2026
18	Advanced GroupPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	501-1,000	125
	“Advanced Group provides expertise in talent acquisition and management, outsourcing, and professional services.” Source: company website · checked Sep 5, 2026
19	Proficientnow, INCIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	112
	“Proficient Now Inc is a nationwide talent firm located in Lisle, IL.” Source: company website · checked Sep 5, 2026
20	Scale VirtuallyPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	201-500	111
	“Scale Virtually is a world-class staffing agency that finds brilliant talent and fully integrates them into your business.” Source: company website · checked Sep 5, 2026
21	MMD ServicesIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	n/a	104
	“MMD Services Inc.” Source: company website · checked Sep 5, 2026
22	Gforce Life SciencesIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	100
	“Multi-Year Award Winner Inc.” Source: company website · checked Sep 5, 2026
23	HarmerIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	89
	“Founded in 1986, Harmer is a trusted recruiting partner specializing in Accounting, Finance, and Information Technology.” Source: company website · checked Sep 5, 2026
24	Slayton Search PartnersIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	11-50	80
	“Since our beginning in 1985, Slayton Search Partners' strategy has been to focus on possibilities, not limitations.” Source: company website · checked Sep 5, 2026
25	Labor TempsStrong evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	201-500	72
	“Labor Temps is a team of staffing professionals that understands your business and is eager to help you and your organization meet your business objectives.” Source: company website · checked Sep 5, 2026

Showing 25 of 376 professional staffing agencies based in Chicago, United States

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Professional staffing agencies based in Chicago, United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

New YorkLargest hub · 897 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

186

11-50

115

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 376 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 professional 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 Chicago, United States whose own description of what they do matches “professional 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 professional staffing agencies, and records with no verified work email. Companies headquartered outside Chicago 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, 2,706 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.

Professional staffing agencies by metro in the United States

Frequently asked

How many professional staffing agencies are there based in Chicago, United States?

RevenueBase identified 376 professional staffing agencies headquartered in Chicago, 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?

Staff Management SMX, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most professional staffing agencies?

New York leads with 897 headquartered companies, followed by Houston (611) and Atlanta (448).

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 2,706 verified decision-maker contacts tracked across these 376 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.