| # | Company | Employees |
|---|---|---|
| 1 |
Milwaukee Toolbit.ly
Innovative technology-focused company in power, hand tools industry Offers fast-paced design environment, professional development, and empowers leaders to succeed |
9,854 |
| 2 |
First Data Corporationfiserv.com
A global leader in payments and financial technology, serving financial institutions, merchants, and businesses worldwide |
9,745 |
| 3 |
Best Version Mediabestversionmedia.com
Provides small and midsize businesses with print, digital ads, online listings, and review management to enhance local market presence. |
2,570 |
| 4 |
REV Group, Increvgroup.com
Specialty vehicle designer and manufacturer, offering customized solutions for fire & emergency, commercial, and recreational applications to a diverse customer base in the United States |
2,380 |
| 5 |
Shorewestshorewest.com
Family-owned company in Wisconsin since 1946, dedicated to helping families buy and sell homes Top workplace with 25 sales offices statewide |
1,399 |
| 6 |
QPS Employment Groupqpsemployment.com
A staffing agency specializing in IT, accounting, finance, and HR positions for the manufacturing industry with a focus on customer service and employee satisfaction |
1,123 |
| 7 |
Elmbrook Schoolselmbrookschools.org
A top-tier public school district serving over 7,000 students in Wisconsin, known for academic excellence, personalized learning, and community engagement |
905 |
| 8 |
STS Technical Servicesststechnicaljobs.com
A Top 100 Staffing Firm specializing in aerospace, manufacturing, defense, and industrial industries, connecting talented individuals with global career opportunities |
859 |
| 9 |
Hydritehydrite.com
Innovative independent provider of chemicals and services, focused on food safety, water treatment, manufacturing efficiency, and crop health, with strong community engagement |
813 |
| 10 |
Landmark Credit Unionlandmarkcu.com
A customer-owned financial cooperative serving Southern Wisconsin, Northeastern Illinois, and businesses, offering exceptional rates, personalized service, and lower fees |
807 |
| 11 |
Waterstone Mortgage Corporationwaterstonemortgage.com
Provides innovative mortgage lending services with unique loan products and technology to simplify homeownership for customers. |
736 |
| 12 |
Community Care Inccommunitycareinc.org
Coordinates supportive services for older adults and individuals with disabilities in Wisconsin, enabling independent living through personalized care plans and provider partnerships. |
687 |
| 13 |
Photronicsphotronics.com
Industry leader in designing, developing, and producing reticles and photomasks for semiconductor and microelectronic applications with nine global manufacturing facilities |
640 |
| 14 |
Infotech Enterprises, Inc.infotechenterprises.com
A consulting firm specializing in Mobile Apps, Custom Software, Web Development, and Integrations, with a focus on understanding business challenges and creating impactful solutions |
587 |
| 15 |
Brookfield Zoo Chicagobrookfieldzoo.org
This organization leads in animal care, conservation, and education, inspiring individuals to protect wildlife and ecosystems for a sustainable future |
573 |
| 16 |
Fiserv Lending Solutionsfiserv.com
Stay updated on our latest news and developments by following us on LinkedIn for more insights and information |
525 |
| 17 |
North Shore Banknorthshorebank.com
A customer-focused bank in Wisconsin and Illinois, supporting families, businesses, and communities with personalized service and online banking options |
510 |
| 18 |
Novus Home Mortgagenovushomemortgage.com
Innovative residential lending company leveraging technology to simplify and streamline mortgage process with exceptional customer service and a variety of loan options |
504 |
| 19 |
RF Technologiesrft.com
Designing and manufacturing life safety solutions to protect children, empower elders, and secure communities through innovative technology and expertise |
407 |
| 20 |
Wolterwolterinc.com
The company offers a wide range of new and used material handling equipment, service, training, robotics, automation, storage solutions, and engineered systems to customers across several states |
400 |
| 21 |
Old Republic Risk Managementorrm.com
A provider of primary casualty insurance products to clients with complex risks, offering innovative solutions for cost reduction and risk management |
396 |
| 22 |
ROM Technologies, Inc.romtech.com
Developer of patented medical technology for knee and hip rehabilitation, facilitating 50% faster recovery and cost savings for patients, medical facilities, and payors |
374 |
| 23 |
Guhring USAguhring.com
A world-class manufacturer of cutting tools for the metalworking industry, offering coating, reconditioning, and tool management services with global presence |
368 |
| 24 |
Milliman IntelliScriptrxhistories.com
A leading insurtech company creating data-driven solutions for the US life and health insurance sectors to help carriers make better decisions faster |
329 |
| 25 |
International Foundation of Employee Benefit Plans (IFEBP)ifebp.org
A nonprofit organization providing objective education, research, and information to the employee benefits community worldwide, ensuring health and financial security for plan beneficiaries |
324 |
| 26 |
Delta Mu Delta - International Academic Honor Society in Business (Official)deltamudelta.org
An international academic honor society recognizing and encouraging academic excellence among students, fostering community well-being and lifetime membership opportunities |
196 |
| 27 |
Annex Wealth Managementannexwealth.com
An independent investment advisor providing comprehensive financial services to individuals, families, and businesses with a focus on integrity and unbiased advice |
190 |
| 28 |
Yale New Haven Health Urgent Careynhhs.org
Provider of high-quality, accessible urgent care for non-life-threatening illnesses and injuries with on-site X-ray and lab services, open 24/7 Accepts insurance and offers self-pay options |
181 |
| 29 |
CBRE | ESIthinkESI.com
The company focuses on ensuring buildings run efficiently, reduce energy consumption, enhance occupant comfort, and align with organizational needs |
169 |
| 30 |
IDK America Inc.idkav.com
Develops, manufactures, and tests state-of-the-art Pro AV products in Japan, including AV over IP equipment, switchers, extenders, and video processors. |
162 |
| 31 | 158 | |
| 32 |
Greenfield Rehabilitation Agencygrawi.com
A leading therapist-owned rehab agency in the Midwest, providing high-quality rehabilitation services to senior living communities, nursing facilities, and home health agencies |
158 |
| 33 |
Lemberglembergelectric.com
A full-service electrical contracting firm offering design, construction, maintenance, energy technologies, data communication, testing, and award-winning sign installations since 1928 |
157 |
| 34 |
MahlerCleanmahlerclean.com
A premier commercial cleaning services firm in Wisconsin, offering customized plans for offices, industrial, and medical facilities with exceptional service and competitive prices |
152 |
| 35 |
Realty Executives Wisconsinrealtyexecutives.com
Real estate experts offering guidance on buying and selling homes, providing education and expertise throughout the process with personalized support |
147 |
| 36 |
United Mailing Servicesunitedmailingservices.com
A company established in 1989, specializing in mailing solutions and digital printing services to help businesses reduce mailing costs efficiently |
146 |
| 37 |
Trace-A-Matictraceamatic.com
Specializing in high precision CNC machining, we provide complex components for various industries with state-of-the-art facilities and a focus on customer satisfaction |
125 |
| 38 |
Golden Angels Investorsgoldenangelsinvestors.com
Investor organization supporting startups with funding and mentorship, focusing on fintech, edtech, healthcare, hi-tech, and services in growing markets |
32 |
| 39 |
Next Level Planning & Wealth Managementnlpwm.com
This company offers comprehensive financial planning and wealth management strategies with an educational approach, acting as personal financial coaches for clients |
25 |
| 40 |
Imperial Kitchens and Baths, Inc.imperialkb.com
A company specializing in kitchen and bath remodeling, cabinet refacing, custom cabinets, and furniture, also providing services for ADA design and finishing basements |
10 |
| 41 |
AIR*ELECTRIC*HYDRAULIC AND HOIST LLCaehh.net
The company specializes in providing innovative solutions for manufacturing processes to increase productivity and reduce injury risks through various product lines |
4 |
| 42 |
The Hamilton Group USthehamiltongroupus.com
An independent brokerage offering a wide range of financial programs and products nationwide with a commitment to ethical standards and community involvement |
4 |
| 43 |
Kellenberger-Landsee and Associates, LLCkellenberger-landsee.com
Insurance brokerage firm specializing in risk management and coverage negotiation for global clients in various industries, with expertise in loss control and claims management |
3 |
| 44 |
FOCUS Mission Critical Advisorsfocusmca.com
Data center advisory services offering cost-effective and innovative solutions for optimized design, construction, and operation of scalable, reliable, and efficient data centers |
2 |
Turn this list into pipeline
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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 24, 2026.
The same list elsewhere in United States
- The largest companies in the United States 91,669
- The largest companies in California 12,813
- The largest companies in New York State 10,485
- The largest companies in Texas 8,086
- The largest companies in Florida 4,945
- The largest companies in Illinois 4,175
- The largest companies in Pennsylvania 3,110
- The largest companies in Massachusetts 3,093
- The largest companies in Georgia 2,632
- The largest companies in Ohio 2,618
- The largest companies in New Jersey 2,569
- The largest companies in Virginia 2,503
- The largest companies in Michigan 2,346
- The largest companies in North Carolina 2,174
- The largest companies in Alabama 1,806
- The largest companies in Washington State 1,785
- The largest companies in Colorado 1,774
- The largest companies in Minnesota 1,700
- The largest companies in Maryland 1,527
- The largest companies in Wisconsin 1,482
- The largest companies in New York 6,920
- The largest companies in San Francisco 2,030
- The largest companies in Houston 1,791
- The largest companies in Chicago 1,668