The 38 largest companies in Evanston (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	ZS zs.com Management consulting and technology firm combining data, science, and human ingenuity to deliver impactful solutions and improve business outcomes worldwide.	Business Consulting and Services	🇺🇸 Evanston	21,618	1983
2	Northwestern University northwestern.edu Premier research university offering innovative teaching, pioneering research, and diverse, collaborative environments across multiple campuses near Chicago and Qatar.	Higher Education	🇺🇸 Evanston	16,997	1851
3	Endeavor Health endeavorhealth.org Endeavor Health is a healthcare system in Illinois, uniting multiple hospitals to provide personalized patient experiences and world-class care	Hospitals and Health Care	🇺🇸 Evanston	16,454	n/a
4	Rotary International rotary.org Global network of leaders and volunteers uniting to create lasting positive change in communities worldwide through service and engagement.	Non-profit Organizations	🇺🇸 Evanston	8,787	n/a
5	NorthShore University HealthSystem endeavorhealth.org Integrated health system delivering personal patient care, convenient access, and pioneering medical services across multiple hospitals and clinics in Illinois.	Hospitals and Health Care	🇺🇸 Evanston	5,857	n/a
6	Rotaract rotary.org A global community of young adults aged 18-30 coming together to exchange ideas, plan activities, and take action for positive change	Non-profit Organizations	🇺🇸 Evanston	3,674	1968
7	Northwestern University - Kellogg School of Management kellogg.northwestern.edu An institution specializing in developing leaders through MBA programs, executive education, and degree options with focus on analytical, creative, and social skills	Higher Education	🇺🇸 Evanston	3,520	1908
8	Right At School rightatschool.com This company provides safe and fun extended day enrichment programs for students, hiring educators and offering competitive rates, professional development, and benefits	Education Administration Programs	🇺🇸 Evanston	1,931	2011
9	Sigma Chi Fraternity sigmachi.org An organization founded in 1855 with a mission to develop values-based leaders and promote friendship, justice, and learning	Civic and Social Organizations	🇺🇸 Evanston	1,715	1855
10	Sigma Alpha Epsilon Fraternity sae.net This organization promotes friendship, scholarship, leadership, and service for lifelong members	Higher Education	🇺🇸 Evanston	1,299	1856
11	Evanston/Skokie School District 65 district65.net K-8 school district in Evanston/Skokie, IL serving over 7,000 students Highly qualified teachers, diverse student population, engaging curriculum, and supportive community	Education Administration Programs	🇺🇸 Evanston	984	n/a
12	Freelance Artist mattcolorist.wixsite.com A Chicago-based company specializing in Flame Artist services including compositing, matte painting, motion graphics, color grading, and editing for various clients and projects	Media Production	🇺🇸 Evanston	841	2018
13	City of Evanston cityofevanston.org Managing a diverse lakeside community north of Chicago featuring Northwestern University, Rotary International headquarters, public schools, various business districts, and parks.	Government Administration	🇺🇸 Evanston	707	1863
14	Evanston Township High School (ETHS)eths.k12.il.us A comprehensive high school in Evanston, Illinois, serving a diverse student body to their fullest potential since 1883	Primary and Secondary Education	🇺🇸 Evanston	686	1883
15	Beghou beghou.com The company provides sales and marketing consulting services to pharmaceutical and healthcare industries, offering expertise in analytics and innovative insights	Business Consulting and Services	🇺🇸 Evanston	550	1993
16	Hagerty Consulting hagertyconsulting.com A full-service firm specializing in disaster preparedness, response, and recovery, offering surge staffing, financial management, and resilience planning services	Business Consulting and Services	🇺🇸 Evanston	416	2001
17	UL Research Institutes ul.org A global safety science organization conducts trusted research to address public safety issues, develop standards, and promote sustainability	Research Services	🇺🇸 Evanston	389	1894
18	Uinta County School District 1 uinta1.com A primary/secondary educational institution in Evanston, Wyoming, offering schooling and academic programs for students in Uinta County	Primary and Secondary Education	🇺🇸 Evanston	357	n/a
19	The Family Institute at Northwestern University family-institute.org A leading behavioral health organization providing research, education, and counseling services to strengthen and heal individuals, couples, families, and children	Mental Health Care	🇺🇸 Evanston	350	1969
20	American Massage Therapy Association – AMTA amtamassage.org A non-profit association for massage therapists, promoting ethics, fair licensing, and public education Offers networking, resources, and advertising opportunities	Non-profit Organizations	🇺🇸 Evanston	322	1943
21	Mather mather.com A non-denominational organization dedicated to creating opportunities for aging well through senior living, neighborhood programs, research, and diverse employment opportunities	Non-profit Organizations	🇺🇸 Evanston	310	1941
22	ByDzyne Inc bydzyne.com Innovative US-based company offering trendy products in wellness, training, travel, and e-commerce to empower individuals and transform lives	Advertising Services	🇺🇸 Evanston	301	2019
23	Magnetar magnetar.com Specializes in alternative credit, systematic investing, and venture capital to deliver diversified returns and support financial education initiatives.	Financial Services	🇺🇸 Evanston	297	2005
24	Katalyst Software Services Limited katalysttech.com provides software products, technology services, and solutions specializing in ERP, supply chain, manufacturing, digital commerce, and professional services globally	IT Services and IT Consulting	🇺🇸 Evanston	273	2011
25	Accuity risk.lexisnexis.com A trusted provider of financial crime screening, payment services, and benefits compliance solutions for enabling financial inclusion and identifying criminal activity	Financial Services	🇺🇸 Evanston	258	n/a
26	GlobeMed globemed.org A global health organization that mobilizes students and grassroots leaders to improve health equity in partnership with community organizations worldwide	Civic and Social Organizations	🇺🇸 Evanston	225	2006
27	Epcon epconpartners.com Full-service EPC organization offering engineering, construction management, inspection, safety, and environmental services for energy and infrastructure projects across North America	Oil and Gas	🇺🇸 Evanston	205	2008
28	Extended Care extendedcarellc.com A consulting organization based in Evanston, Illinois, specializing in skilled nursing services and support	Facilities Services	🇺🇸 Evanston	174	n/a
29	Northwestern University School of Communication communication.northwestern.edu A global leader in communication arts and sciences education, integrating research and practice to prepare graduates as leaders and innovators	Higher Education	🇺🇸 Evanston	171	n/a
30	Garrett-Evangelical Theological Seminary garrett.edu Graduate theological school affiliated with the United Methodist Church, preparing leaders to share the love of Jesus Christ globally Aiming for respect and reconciliation	Higher Education	🇺🇸 Evanston	169	1853
31	The Cradle cradle.org An adoption and child welfare agency offering lifelong support, counseling, education, placement services, and an on-site nursery for infants in need	Non-profit Organizations	🇺🇸 Evanston	160	1923
32	Music Institute of Chicago musicinst.org A music education organization providing high quality teaching, performing, and service activities to inspire and educate communities through accessible music resources	Musicians	🇺🇸 Evanston	159	1931
33	Grumman\|Butkus Associates grummanbutkus.com A consulting engineering firm specializing in MEP design, energy consulting, and sustainability services for high-performing, efficient buildings and facilities	Design Services	🇺🇸 Evanston	153	1973
34	Institute For Student Business Education (ISBE)nuisbe.org A student organization at Northwestern University providing diverse business opportunities to over 200 members, preparing them for career success	Professional Training and Coaching	🇺🇸 Evanston	151	2005
35	C.E. Niehoff & Co.ceniehoff.com A leading US company specializing in heavy duty brushless alternators for demanding applications, offering customized models for niche markets with various features	Motor Vehicle Manufacturing	🇺🇸 Evanston	118	1923
36	Romano Wealth Management romanowealth.com A wealth management company with over 60 years of experience supervising over $1 Billion in assets, offering sound investment management services to individuals and organizations	Financial Services	🇺🇸 Evanston	19	1962
37	Backlot Coffee backlotcoffee.com Specialty coffee company located in Evanston, Illinois providing high-quality coffee and fostering a welcoming community for coffee lovers	Food and Beverage Retail	🇺🇸 Evanston	14	2006
38	Reprise Coffee Roasters repriseroasters.com Specialty coffee retailer based in Lake Forest, Illinois offering high quality coffee through cafe and wholesale, sourcing from small farms worldwide and supporting community and employees	Food and Beverage Services	🇺🇸 Evanston	4	2015

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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