| # | Company | Employees |
|---|---|---|
| 1 |
Leo Burnettleoburnett.com
Global communications agency combining creativity, data, and technology to influence human behavior and drive client prosperity worldwide. |
6,825 |
| 2 |
Starcomstarcomww.com
A global leader in communications planning and media, focused on putting people at the center to inspire and drive business forward through data and technology |
5,691 |
| 3 |
Credicocredico.com
A leading customer acquisition agency connecting brands with local sales teams to acquire new customers through face-to-face methods |
2,779 |
| 4 |
Marketing Werksproductconnections.com
A fully integrated engagement agency specializing in omnichannel solutions to build brand-consumer relationships, offering a suite of creative services |
1,826 |
| 5 |
Valassis Marketing Solutionsrrd.com
Innovative marketing solutions company powering business-to-human connections, driving economic growth, and accelerating revenue potential for brands through data intelligence and technology |
1,743 |
| 6 |
MERGEmergeworld.com
Data-driven storytelling and AI-powered personalization services for healthcare and consumer brands across strategy, creative, public relations, performance marketing, and digital platform expertise. |
880 |
| 7 |
motor club of americabit.ly
The company offers opportunities to make money online, enabling individuals to quit their 9 to 5 jobs and elevate their lifestyles in less than 90 days |
775 |
| 8 |
Arc Worldwidearcww.com
A leading shopper and retail agency focused on creating Irresistible Commerce by uncovering growth barriers, delivering creative solutions, and driving brand sales and love |
609 |
| 9 | 519 | |
| 10 |
Yes Marketingdata-axle.com
Yes Marketing helps marketers engage, acquire, and retain consumers with personalized, data-driven customer experiences through expert services, technology, and proprietary data assets |
519 |
| 11 |
The Black Sheeptheblacksheep.marketing
An integrated collegiate media and marketing company that helps businesses reach students at over 200 universities through relationship-driven strategies |
505 |
| 12 |
Advantage Unified Commerceadvantageunifiedcommerce.com
Innovative commerce agency unifying specialists from agencies, retailers, brands, and startups to scale commerce using advanced data and technology |
494 |
| 13 |
Blue Chipbluechipww.com
A Chicago-based marketing agency specializing in brand and shopper marketing, combining the resources of a holding company with the agility of a private agency Bringing change through powerful ideas |
436 |
| 14 |
rEvolutionrevolutionworld.com
Global sports marketing agency specializing in sponsorship consulting, creative campaigns, media planning, and analytics for brands and rights holders worldwide |
403 |
| 15 |
Rise, a Quad agencymeetrise.com
Full-service media agency specializing in omnichannel commerce, retail media, advanced analytics, and creator marketing to deliver integrated experiences through proprietary technology stacks. |
387 |
| 16 |
IMS Integrated Merchandising Solutionsimsretail.com
IMS is a diverse marketing solutions provider, representing leading brands with a focus on best execution at lowest price in North America |
360 |
| 17 |
IEG
Global consultancy specializing in partnership strategy, evaluation, and measurement for sponsors and rightsholders Pioneers in sponsorship valuation, offering strategic insights and analytics |
358 |
| 18 |
BBDO Chicagoenergybbdo.com
A global creative agency focused on energizing people and brands through innovative thinking, teamwork, and commitment to delivering exceptional work |
348 |
| 19 |
PromoWorksproductconnections.com
An integrated engagement agency specializing in omnichannel solutions to build relationships between brands and consumers, offering creative services from start to finish |
345 |
| 20 |
Plan B庐thisisplanb.com
A results-driven marketing agency committed to pushing boundaries, promoting positive change, and operating mindfully as a certified B Corp |
344 |
| 21 |
Xcite Automotivexciteauto.com
Xcite Automotive offers lot management solutions with photography, reconditioning services, and digital vehicle stickers to drive sales and enhance the buyer's experience |
331 |
| 22 |
All Terrainallterrain.net
A global experiential marketing agency creating activations, events, and campaigns that drive real connections, press coverage, and measurable results for brands |
320 |
| 23 |
Legacy Marketinglegacymarketing.com
This company specializes in creating cross-cultural and generational experiences through strategic, creative, and production services that leave a lasting impact |
310 |
| 24 |
AbelsonTaylor Groupabelsontaylorgroup.com
This company specializes in providing ROI through expertise, insights, creativity, and strategy, transforming brands with imaginative approaches to drive market results |
272 |
| 25 |
LEClecltd.com
A Chicago-based company founded in 1986, LEC specializes in building and sustaining brands through strategic messaging, award-winning design, and creative solutions |
234 |
| 26 |
Rapid Displaysrapiddisplays.com
A leading retail marketing group offering design, engineering, production, and assembly of displays across various segments in the US market |
178 |
| 27 |
Agency EAagencyea.com
A full-service brand experience agency specializing in live, hybrid, and virtual events, global event programs, product launches, and B2B campaigns |
176 |
| 28 |
Laughlin Constablelaughlin.com
An independent, full-service brand experiences agency creating personalized brand experiences through strategic intelligence, brand creativity, human context, and connected experiences |
173 |
| 29 |
NOVUS Media LLCnovusmedia.com
An award-winning independent media agency specializing in maximizing ROI through strategic media planning, buying, analytics, and targeted traffic generation |
170 |
| 30 |
Cardenas Marketing Network, Inc.cmnevents.com
Specializing in multicultural Hispanic market engagement through music, sports, and culture Offering expertise in shopper marketing, digital, media buying, and sponsorship activation |
163 |
| 31 |
Galactic Fed | Digital Marketing Agencygalacticfed.com
A fully distributed multinational agency specializing in Growth Marketing, SEO, and Paid Media, launching brands into orbit with expert strategies |
162 |
| 32 |
ShareASale, Owned by Awinshareasale.com
Affiliate marketing network focused on nurturing relationships, cutting-edge technology, and guiding clients to success Acquired by global affiliate network Awin in 2017 |
156 |
| 33 |
Highdivehighdiveus.com
An independent, award-winning creative agency based in Chicago, specializing in powerful, standout campaigns for top brands without traditional agency baggage |
153 |
| 34 |
Jennifer Lynnlynnjenni.com
A global marketing agency specializing in helping medical and technology companies increase leads, sales, and brand reach using innovative technology and top talent |
151 |
| 35 |
Burrell Communicationsburrell.com
A full-service marketing and communications agency known for leadership, strategic approaches, creative capabilities, and reaching diverse audiences with innovative ideas |
146 |
| 36 |
Kelly Scott Madisonksmmedia.com
A top independent media agency providing original solutions and industry insights to deliver exceptional results for clients' toughest brand challenges Visit wwwksmmediacom |
128 |
| 37 |
Almoh Mediaalmohmedia.com
An integrated B2B marketing agency specializing in lead generation, account-based marketing, demand generation, digital marketing, account management, and database management |
96 |
| 38 |
Validated Insightsvalidatedinsights.com
A results-driven higher education agency that guarantees a 15% improvement in KPIs within the first 60 days or clients don't pay fees |
40 |
| 39 |
imagination.themxgroup.com
A B2B agency specializing in content marketing, part of The Mx Group, offering brand, demand, digital, and strategic solutions |
34 |
| 40 |
The Marketing Store (integrated team at We Are Unlimited)
Customer engagement agency specializing in driving closer connections between people and brands through innovative insights, collaboration, and creative solutions |
29 |
| 41 |
Ten Speedtenspeed.io
An SEO & Content Marketing agency specializing in services for SaaS companies, offering strategy consulting, content creation, optimization, distribution, and expertise |
25 |
| 42 |
I-Prowessi-prowess.com
B2B Lead Generation Company driving marketing campaigns, generating business leads, and helping businesses increase sales and growth through client-focused strategies |
22 |
| 43 |
LoSasso Integrated Marketinglosasso.com
This company specializes in helping businesses selling B2B and high consideration products with brand strategy, demand generation, and customer engagement for effective marketing |
18 |
| 44 |
Pilot Digital Marketingpilotdigital.com
Provider of comprehensive Internet marketing strategies and solutions to help businesses find and retain customers through improving online presence |
16 |
| 45 |
Accelerated Digital Mediaaccelerateddigitalmedia.com
A results-driven performance marketing agency specialized in eCommerce and healthcare, dedicated to client success through tailored strategies and transparent collaboration |
11 |
| 46 |
Popskullpopskullchicago.com
The company specializes in advertising and marketing services, creating impactful brand experiences and connecting brands across various platforms with strategic campaigns |
11 |
| 47 |
Digital4Startups Inc.digital4startups.com
Digital4Startups is a digital marketing consulting firm specializing in integrated marketing, SEM, SEO, Paid Search, and Google Premier Partner services |
8 |
| 48 |
Smarty Mediaverysmarty.com
A digital marketing agency that helps businesses increase online traffic, generate leads, and boost revenue through internet marketing strategies |
8 |
| 49 |
Upmkt Digitalupmktdigital.com
An e-commerce agency specializing in helping growth-stage retail brands increase online engagement, drive sales, and create compelling brand experiences |
5 |
| 50 |
TimeZoneOnetimezoneone.com
Global creative communications agency with offices in Chicago, Toronto, and Christchurch, specializing in marketing destinations, attractions, and adventures |
3 |
| 51 |
Impact Executives, Inc.impactexecs.com
This company focuses on providing high performance and exceptional results to clients by growing, protecting, and defending their brands They prioritize their team's success |
2 |
| 52 |
Ux.haus Digital Studioux.haus
This company specializes in providing digital solutions to small and medium businesses, focusing on clean design, effective development, and user experience for online growth |
1 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 9, 2026.
More company lists in Chicago
- The largest companies in Chicago 1,669
- Financial Services companies in Chicago 152
- SaaS companies in Chicago 126
- Hospitals and Health Care companies in Chicago 96
- Software Development companies in Chicago 89
- IT Services and IT Consulting companies in Chicago 86
- Non-profit Organizations companies in Chicago 65
- Real Estate companies in Chicago 62
- Venture Capital and Private Equity Principals companies in Chicago 54
- Higher Education companies in Chicago 50
- Business Consulting and Services companies in Chicago 47
- Food and Beverage Services companies in Chicago 47
- Technology, Information and Internet companies in Chicago 42
- Transportation, Logistics, Supply Chain and Storage companies in Chicago 41
- Investment Management companies in Chicago 40
- Insurance companies in Chicago 39
- Law Practice companies in Chicago 34
- AI-native companies in Chicago 26
- Construction companies in Chicago 26
- Hospitality companies in Chicago 26
- Staffing and Recruiting companies in Chicago 25