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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 3.8
Offices of chief executives and their advisory and interdepartmental committees and commissions.
Zippia score 3.9
Woods Basement Systems, Inc. has been MO & IL's trusted basement & foundation contractor since 1986. We specialize in basement waterproofing, crawl space encapsulation, foundation repair, concrete lifting & leveling & more. Call or click today to sched...
Zippia score 4.1
To provide consumers a place to find all our products.
Zippia score 3.7
1902 restored firehouse displaying local firefighting tools & machines, plus photographs & prints.
Zippia score 3.8
To change the world, helping the poor or creating more sustainable business practices within a certain industry.
Zippia score 3.5
This is the Collinsville Community Unit School District #10 homepage. Here you will find information for parents, students, staff and the community.
Zippia score 4.0
Zippia score 4.3
Tetra Tech is a leading provider of consulting, engineering, program management, construction, and technical services addressing the resource management and infrastructure markets. The Company supports government and commercial clients by providing innovative solutions focused on water, the environment, and energy. With more than 10,000 employees worldwide, Tetra Tech's capabilities span the entire project life cycle.
Zippia score 4.7
Schnuck Markets, Inc. have been serving customers a unique combination of quality food, variety and value for more than seven decades. Founded in north St. Louis in 1939, the family-owned grocery company has grown to include nearly 100 stores in five states: Missouri, Illinois, Indiana, Wisconsin and Iowa.
Zippia score 4.9
Ameren Corporation is an American power company created December 31, 1997 by the merger of St. Louis, Missouri's Union Electric Company and the neighboring Central Illinois Public Service Company of Springfield, Illinois. It is now a holding company for several power companies and energy companies.
Zippia score 4.8
Vistra Energy is a premier Texas-based energy company focused on the competitive energy and power generation markets through operation as the largest retailer and generator of electricity in the growing Texas market. Our integrated portfolio of competitive businesses consists primarily of TXU Energy and Luminant. TXU Energy sells retail electricity and value-added services (primarily through our market-leading TXU Energy™ brand) to approximately 1.7 million residential and business customers in Texas. Luminant generates and sells electricity and related products from our diverse fleet of generation facilities totaling approximately 18,000 MW of generation in Texas, including 2,300 MW fueled by nuclear power, 8,000 MW fueled by coal and 7,500 MW fueled by natural gas, and is a large purchaser of renewable power including wind and solar-generated electricity.
Zippia score 4.3
White Cap Construction Supply, Inc. operates as asubsidiary of HD Supply Construction Supply Group, Inc.
Zippia score 4.6
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Zippia score 4.3
Wright Tree Service, Inc. provides vegetation management, storm restoration, and work planning services for utility companies and their communities. The company s vegetation management services include line clearance; mowing and land clearing; and herbicide services, as well as provides substation maintenance and restoration services. It also provides storm restoration services for natural disasters, such as ice storms, tornados, and hurricanes. The company was founded in 1933 and is based in Des Moines, Iowa. Wright Tree Service, Inc. operates as a subsidiary of Wright Service Corp.
Zippia score 4.7
At Dynegy, they deliver more than just power to residential, municipal, commercial and industrial customers across several states. They are committed to being a leader in the electricity sector throughout the Midwest and Northeast. In 2018, Dynegy was acquired by Vistra Energy, a premier, integrated power company based in Irving, Texas, combining an innovative, customer-centric approach to retail with a focus on safe, reliable, and efficient power generation.
Zippia score 4.1
Platinum Corral was founded in 1996 as a multi-unit franchise operator of Golden Corral Buffet-Grill restaurants. We have become one of the largest, most progressive and fastest growing operations in the system with units in North Carolina, South Carolina, Ohio, Virginia, West Virginia, and Kentucky.
Zippia score 4.1
Join us for this journey in celebration of our American family-owned business that has grown to be a leader in the construction and landscape industry since 1946. Click on our timeline below to see highlights from County Materials' history. We also ...
Zippia score 4.5
First Busey Corporation is a financial holding company headquartered in Champaign, Illinois.
Zippia score 4.3
MotoMart is a customer-first chain of convenience stores predominantly in the Midwest.
Zippia score 3.8
THRIVE Affordable Vet Care specializes in providing veterinary care services. Founded in 2014, the company is headquartered in Austin, Texas.
Zippia score 3.7
The best tires and the best tire brands. Serving 42 locations in and around St. Louis. For car maintenance and auto repair, count on Dobbs.
Zippia score 4.6
E2 Consulting Engineers, Inc. was founded in 1988 by Hersh Saluja to provide wastewater and water consulting services for municipal and federal clients. Our services quickly expanded to include transit and transportation engineering. In 1992, E2 began providing services to the Department of Energy for facility operations and maintenance for nuclear operations. In 1993, CH2M HILL sponsored E2 as one of its Protégé firms. In 2012, E2 began providing project management services to utility clients, including Southern California Gas Company and Pacific Gas & Electric. It moved to expand pipeline construction and inspection services to utilities throughout the United States. In the same year, E2 also developed and launched a proprietary software application, E2 M2M® to streamline and create efficiencies around the recordkeeping and sharing of field data and complex projects. In 2017, E2 was recognized for our outstanding growth by the Inc. 5000 list and the SF Business Times’ Fast 100 list. Both publications recognize outstanding business growth and performance. After 30+ years in business, E2 continues to grow and expand its suite of services for clients throughout the United States.
Zippia score 4.1
Lifting the St. Louis, Missouri, and Illinois areas to happier & healthier lives since 1983. 24 Hour Access Gyms, Kid's Club, Group Exercise, and More!
Zippia score 3.8
Scott Credit Union is a full-service financial institution providing financial services for individuals and businesses, including free checking accounts with interest, ATMs, credit and debit cards, new and used vehicle loans, mortgage loans, unsecured ...
Zippia score 3.8
First Community is the largest credit union in Missouri and among the Top 10 financial institutions in the region. Our membership continues to grow as we fulfill our mission to provide quality products and affordable financial services; as we've done f...
Zippia score 3.9
Shop boutique fashion at Glik's, a family-owned retail company with over 60 locations across the Midwest. From Simply Southern Shirts and Hey Dude Shoes to Patagonia and The North Face, you'll receive free shipping on orders over $50
Zippia score 3.6
Locations: Chicago, Champaign, Collinsville, Lisle, and Rockford
| Rank | Company | Zippia score |
|---|---|---|
| 1 | City of Collinsville | |
| 2 | Woods Basement Systems | |
| 3 | IBEW Local 309 | |
| 4 | Firemen's Hall | |
| 5 | Value | |
| 6 | Collinsville Community Unit School District #10 | |
| 7 | Bridal Originals |