Company lists · Data refreshed September 2026

Top 25 Contract staffing firms based in Chicago, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 9, 2026 118 companies tracked

RevenueBase identified 118 contract staffing firms headquartered in Chicago, United States as of September 2026 and tracks 8,642 professional contacts across them, including 1,223 with verified work emails and 2,974 with mobile numbers. New York is the largest hub.

This list covers contract staffing firms 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 9, 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 9, 2026 86% judged on-target in blind review

118Companies

8,642Contacts tracked

1,223Verified emails

2,974Mobile numbers

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The 25 largest contract staffing firms based in Chicago, United States

Ranked by team size

Top 25 of 118 contract staffing firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 9, 2026. RevenueBase Smart Search rates how each company's information relates to contract 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	Staff Management SMX	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 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 9, 2026
2	Addison Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	1,001-5,000	1,840 contacts →
	Indirect evidence “Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…” Source: RevenueBase Database · checked Sep 9, 2026
3	Elite Staffing INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	10001+	1,661 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 9, 2026
4	Lasalle Network	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	201-500	605 contacts →
	Indirect evidence “Keeping business transformations on track is essential to maintaining market advantage.” Source: RevenueBase Database · checked Sep 9, 2026
5	Connect Search, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	51-200	310 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 9, 2026
6	Brilliant	Strong evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	51-200	162 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 9, 2026
7	City Staffing	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	1,001-5,000	148 contacts →
	Partial evidence “City Staffing partners with organizations that need talent fast and at scale-without sacrificing quality.” Source: RevenueBase Database · checked Sep 9, 2026
8	Mack & Associates, LTD	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	11-50	132 contacts →
	Partial evidence “For over 25 years, Mack & Associates has been the boutique staffing firm of choice for Chicagoland’s top professional services firms.” Source: RevenueBase Database · checked Sep 9, 2026
9	MMD Services	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	n/a	104 contacts →
	Indirect evidence “MMD Services Inc.” Source: RevenueBase Database · checked Sep 9, 2026
10	Labor Temps	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	201-500	72 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 9, 2026
11	Altastaff	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	201-500	56 contacts →
	Partial evidence “AltaStaff is a certified WBE and IL BEP staffing company that provides direct hire, temp-to-hire, and temporary staffing.” Source: RevenueBase Database · checked Sep 9, 2026
12	Talent Solutions Group, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	11-50	37 contacts →
	Indirect evidence “Talent Solutions Group is a specialized recruiting and talent solutions firm focused on connecting exceptional professionals with leading organizations across Capital Markets…” Source: RevenueBase Database · checked Sep 9, 2026
13	North Bridge Staffing Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	51-200	37 contacts →
	Partial evidence “North Bridge Staffing was established in 2002 by Gerrie and Pat Dugan, who believed there was a need to provide customized talent solutions to clients, associates, and candidates.” Source: RevenueBase Database · checked Sep 9, 2026
14	The Hire Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	n/a	33 contacts →
	Indirect evidence “The Hire Company is a woman-owned, boutique recruiting firm who puts people first.” Source: RevenueBase Database · checked Sep 9, 2026
15	ARETÊ	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	201-500	31 contacts →
	Indirect evidence “What We Do: Arete is a direct hiring partner for several of the Nation's Largest Employers!” Source: RevenueBase Database · checked Sep 9, 2026
16	Primary Staffing	Indirect evidence	Chicago, United StatesHQ checked Sep 9, 2026	51-200	29 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 9, 2026
17	Arlington Resources	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	11-50	24 contacts →
	Partial evidence “Arlington Resources specializes in the placement of Human Resources Professionals for direct hire, contract and temporary services.” Source: RevenueBase Database · checked Sep 9, 2026
18	Jobgiraffe	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	11-50	23 contacts →
	Indirect evidence “Founded in 1964 as Paige Personnel Services, JobGiraffe, an Ari Walsh company, helps organizations of all types and sizes throughout Chicago and the suburbs to find highly…” Source: RevenueBase Database · checked Sep 9, 2026
19	Civic Staffing	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	11-50	22 contacts →
	Partial evidence “Civic Staffing is your low-risk, hassle-free partner for all your light industrial temporary staffing needs in the Chicagoland area.” Source: RevenueBase Database · checked Sep 9, 2026
20	Compucore Solutions INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	51-200	21 contacts →
	Partial evidence “CompuCore is a leading staffing, recruitment and consulting firm focused on Information Technological and Non Information Technological industries.” Source: RevenueBase Database · checked Sep 9, 2026
21	LAW Resources, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	1-10	14 contacts →
	Partial evidence “Since 1984, leading law firms and corporations have turned to Law Resources for flexible staffing solutions when they seek paralegals, attorneys and legal support staff.” Source: RevenueBase Database · checked Sep 9, 2026
22	Solve IT Strategies, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	1-10	13 contacts →
	Indirect evidence “Call us 312-870-0365!” Source: RevenueBase Database · checked Sep 9, 2026
23	IFG US	Partial evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	11-50	12 contacts →
	Partial evidence “With over 15 years of expertise in human capital solutions, IFG US partners with Fortune 500 companies and fast-growing startups nationwide to turn staffing challenges into…” Source: RevenueBase Database · checked Sep 9, 2026
24	Anchor Staffing, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	51-200	12 contacts →
	Indirect evidence “We combine experience and best practices to deliver innovative solutions while keeping the focus on you, the customer.” Source: RevenueBase Database · checked Sep 9, 2026
25	Loftus & O'meara Search	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 9, 2026	1-10	12 contacts →
	Indirect evidence “Loftus & O’Meara has been partnering with Chicago businesses for over 30 years.” Source: RevenueBase Database · checked Sep 9, 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: contract 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 contract staffing firms.
Partial evidence: Its own public description names part of contract staffing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contract 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 118 contract staffing firms based in Chicago, United States

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Contract staffing firms based in Chicago, United States at a glance

As of Sep 9, 2026

14.2%Verified-email coverage

34.4%Mobile-number coverage

73.2Average contacts per company

11-50Median size (employees)

304.2%Largest-city concentration · New York

Sep 9, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 12.0d

1,1320–30

8531–60

061–90

090–180

6180+

Company record updated

Median 72.0d

00–30

2,26831–60

5,06561–90

1,08690–180

223180+

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 contract 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 Chicago, United States whose own description of what they do matches “contract 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 contract 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 contract staffing firms, 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 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, 1,223 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 9, 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.

Contract staffing firms by metro in the United States

Contract staffing firms in New York359
Contract staffing firms in Houston341
Contract staffing firms in Dallas232
Contract staffing firms in Atlanta217
Contract staffing firms in Chicago179
Contract staffing firms in Austin176
Contract staffing firms in Los Angeles126

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 contract 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 contract staffing firms are there based in Chicago, United States?

RevenueBase identified 118 contract staffing firms 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 contract staffing firms?

New York leads with 359 headquartered companies, followed by Houston (341) and Dallas (232).

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 1,223 verified decision-maker contacts tracked across these 118 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 9, 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.