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We figured out the best biggest companies to work for in Illinois using data on salaries, company financial health, and employee diversity. You can also search for the best biggest companies to work for in any other state or city.

Zippia score 4.4
Merlin is an internet company that specializes in the fields of the marketplace, consumer software, delivery, and human resources. It provides a software platform that helps employers to find, screen and select the candidates for every opening. The company was founded in 2017 and headquartered in New York, United States.
Zippia score 4.2
System Sensor is one of the largest man ufacturers of fire detection and notification products in the world. A specialist in smoke detection technology, they place a high premium on research and development. The result is a line of products that are reliable, sophisticated and designed for real-world applications. System Sensor is a global company with local expertise. Their commitment is to serve the needs of the growing worldwide fire alarm market. It is a commitment we back with sales, service and manufacturing sites located close to customers. They know the importance of understanding local markets and fire codes. Whether needed in China, Chile, Korea, or California - in schools, homes, factories or telecommunications facilities - System Sensor products provide world-class fire and smoke detection.
Zippia score 4.3
Green Products That Work. United Laboratories is a leader in the specialty chemical business providing responsible innovations which work better and are safer to use.
Zippia score 3.9
Photonic Instruments, founded in 1996, is the market leading supplier and product innovator of structured illumination and laser ablation systems for confocal and wide field microscopy. It has a long history of continuously enhancing its product offering for performance and features - as well as with accessories, adapters and software that enable OEMs and end user customers to integrate with their products and apply to their research.
Zippia score 4.2
Find the best executive hospitality talent you need now! SHS has over 150 years of collective experience in hospitality and recruiting.
Zippia score 4.1
Plastic Welding equipment & tooling, Ultrasonic welding, iQ Servo Ultrasonic Welding, High-Power Ultrasonics, Vibration welding, Hot-Plate welding, Spin welding, Thermal staking, Ultrasonic Cutting and Sealing and Laser Welding Systems.
Zippia score 4.2
Unity International Group, a premier electrical construction and maintenance provider. The company specializes in electrical system construction; data and telecommunications systems construction; management of mission-critical power infrastructure; building-wide maintenance of electrical, mechanical, and energy management equipment; and enterprise-scale IT infrastructure support and services.
Zippia score 4.5
Mason Corporation. is primarily engaged in manufacturing industrial inorganic chemicals, not elsewhere classified.
Zippia score 3.9
City of St. Charles, Illinois municipal website
Zippia score 4.1
Since 2001, we have fulfilled a.l.e. and catastrophe claims; saving adjusters time, reducing costs and matching policyholders to the best temporary housing.
Zippia score 4.2
Advance Lifts manufactures high-quality loading dock lifts, access platforms and other industrial scissor lift tables. View our wide selection of products today.
Zippia score 3.8
Farm Progress is a network of live events, digital products, data, marketing services, broadcasting, and publications related to agriculture. It is connected to 2 million U.S. farm and ranch decision makers, influencers, and key animal agriculture agribusiness people, and the top 85% of the nation's annual agricultural gross domestic product. The company's 17 state and regional farm publications offer the nation's only 48-state coverage of key agriculture producers with titles that include Nebraska farmer in Nebraska and prairie farmer in Illinois and delta farm press in the Mid-South region. The company also publishes Farm Futures, the nationally circulated magazine for high-volume producers. Farm progress' digital products are core information resources for its subscribers and users. Each publication, show, and broadcast unit provides multiple online information access points, including websites such as farmprogress.Com and farmpress.Com. Its mobile web access was first in the industry and its website visits page-view and site engagement stats underscore its digital accomplishments. It produces and publishes dozens of content-rich e-newsletters and apps for the nation's agricultural producers and show visitors. Farm progress owns and operates four world-class farm trade shows, farm progress show, husker harvest days, New York farm show, and hay and forage expo. The company provides marketing services that include the agriculture industry's comprehensive database, list rental, custom publishing, e-content and e-publications, e-blasts, and produces proprietary and contracted databases and market research for a variety of clients who serve and need to reach and understand America's farmers, ranchers, and rural-living consumers. Farm Progress is a business unit of Penton, a diversified agriculture information business in North America. It was founded in 1841 and is based in Saint Charles, I.L.
Zippia score 4.0
Bison Gear and Engineering has been in operation since 1960, designing and manufacturing long-lasting and robust fractional HP AC motors, DC Motors and PMDC motors, gearboxes, gear reducers, as well as a full selection of AC and DC parallel shaft gearm...
Zippia score 4.2
For more than 40 years, Q Center has been in the business of making meetings matter more. Beginning as corporate training headquarters for a renown professional service firm, Q Center outside of Chicago has graduated into so much more than a full-servi...
Zippia score 3.6
Warwick Publishing is a fourth generation, family-owned promotional products manufacturer. Let's build your brand. ASI / PPAI.
Zippia score 4.1
Zippia score 3.8
Microplastics are very small pieces of plastic that pollute the environment. Microplastics are not a specific kind of plastic, but rather any type of plastic fragment that is less than 5 mm in length according to the U.S. National Oceanic and Atmospheric Administration.
Zippia score 4.1
On the eve of the annual Scarecrow Festival, two St. Charles police officers search for a return killer the same night four teenagers go missing on Munger Road.
Zippia score 3.9
Campton United Soccer Club offers the premier soccer experience in the Fox Valley Illinois area. Campton United is the only competitive soccer club in the tri-cities area with a full-time, professional coaching staff holding National Licenses.
Zippia score 4.7
We're transforming the way we operate to fulfill what consumers and customers want, in a smart, simple way. We're modernizing our iconic food brands, leveraging fresh opportunities and adapting to a changing landscape - all with a culture that's ready to capture growth and drive shareholder value.
Zippia score 4.2
Smithfield Foods is determined to be an ethical food industry leader that excels every day at bringing delicious and nutritious meat products to millions of people around the world in a manner that sets industry benchmarks for sustainability.
Zippia score 4.6
StorterChilds is an RR Donnelley company that is part of a complete, integrated network of RR Donnelley facilities across North America. Headquartered in Gainesville, Florida, this innovative company offers custom communications solutions such as marketing solutions, digital and offset print, mailing and fulfillment, finishing and more. As a G7 Master certified printer, they bring the advanced technology, techniques and standards to meet their clients' visual expectations every step of the way, from first proof to final print.
Zippia score 4.8
At Pactiv, continuous innovation has secured our place as the world's largest manufacturer and distributor of food packaging and foodservice products, supplying packers, processors, supermarkets, restaurants, institutions and foodservice outlets across North America. Since our founding in 1965 as Packaging Corporation of America, we have focused on producing and distributing the highest quality foodservice packaging products. Our product lines today include custom and stock foam, plastic, aluminum, pressed-paperboard, PE coated board, and molded-fiber packaging.
Zippia score 3.7
Potbelly Corporation is a publicly traded American fast-casual restaurant chain that focuses on submarine sandwiches and milkshakes.
Zippia score 4.6
On The Border Mexican Grill & Cantina is a chain of Tex-Mex food casual dining restaurants located in the United States and South Korea.
Zippia score 4.5
Houghton Mifflin Harcourt is a global learning company specialized in pre-K-12 education content, services, and technology solutions. It develops and delivers interactive, results-driven learning solutions that advance teacher effectiveness and student achievement. Through curricula and technology innovation, Houghton Mifflin Harcourt collaborates with school districts, administrators, teachers, parents, and students. The company also publishes an extensive line of reference works and award-winning literature for adults and young readers. Houghton Mifflin Harcourt serves more than 50 million students in over 150 countries worldwide, while its award-winning children's books, novels, non-fiction, and reference titles are enjoyed by readers throughout the world. The company was founded in 1864 and is headquartered in Boston, M.A.
Zippia score 4.3
Address: 4524 Hwy 17 Bypass, Murrells Inlet, SC 29576, USA
Zippia score 3.6
Patio Enclosures offers quality sunrooms, solariums, screen rooms, screened porches, awnings, replacement windows and more custom designed and custom manufactured for your individual project.
Zippia score 4.0
Tiger Drylac U.S.A., Inc. is primarily engaged in the wholesale distribution of paints, varnishes, wallpaper, and supplies.
Zippia score 3.6
Bernie's Book Bank is a children's book bank that collects, processes, and distributes new and gently used children's books to significantly increase book ownership among at-risk infants, toddlers, and school-age children throughout Chicagoland.
Zippia score 4.5
We passionately believe that food and wine hold the power to forge lasting connections, setting the table for a life well lived.
| Rank | Company | Zippia score |
|---|---|---|
| 1 | Merlin 200 | |
| 2 | System Sensor | |
| 3 | United Laboratories | |
| 4 | Photonic Instruments | |
| 5 | SHS | |
| 6 | Dukane | |
| 7 | Unity International Group | |
| 8 | Masons | |
| 9 | City of St. Charles, Illinois | |
| 10 | ALE Solutions | |
| 11 | Advance Lifts | |
| 12 | Farm Progress | |
| 13 | Bison Gear & Engineering | |
| 14 | Q Center | |
| 15 | Warwick Publishing | |
| 16 | Blue Goose Super Market | |
| 17 | Microplastics, Inc. | |
| 18 | Munger Road | |
| 19 | Campton United Soccer Club | |
| 20 | Conagra Foods |