> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/companies-in/chicago-il/business-consulting-and-services/ # Consulting Firms in Chicago, IL The bigger consulting firms headquartered in Chicago, IL, with what they do, their sizes and how to reach their people. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** Among the consulting firms counted in Chicago, IL, the biggest by headcount range include Kearney, Huron and Heidrick & Struggles. They are mostly very small: 76% have 50 or fewer employees. ## Which consulting firms are in Chicago? Among the companies whose public profile lists Business Consulting and Services as their industry and Chicago, IL as their headquarters, the biggest by headcount range include Kearney, Huron, Heidrick & Struggles, Spencer Stuart and Mathco. Names link to a company profile where we have one. | Company | Employees | | --- | --- | | Kearney | 5,001 to 10,000 | | Huron | 5,001 to 10,000 | | Heidrick & Struggles | 1,001 to 5,000 | | Spencer Stuart | 1,001 to 5,000 | | Mathco | 1,001 to 5,000 | | Tms | 1,001 to 5,000 | | West Monroe | 1,001 to 5,000 | | Navigate Power | 1,001 to 5,000 | | Dhr Global | 501 to 1,000 | | Kincentric | 501 to 1,000 | | 66degrees | 501 to 1,000 | | Spaulding Ridge | 501 to 1,000 | | Hbr Consulting | 501 to 1,000 | | Strive Consulting Is Now Launch Consulting | 501 to 1,000 | | Harbor | 501 to 1,000 | | C.A. Fortune | 501 to 1,000 | | Argo-Efeso | 501 to 1,000 | | Kaufman Hall | 201 to 500 | | Hero Digital. Together With Huge | 201 to 500 | | Aarete | 201 to 500 | | Dlc | 201 to 500 | | Cgn Global | 201 to 500 | | Envista Forensics | 201 to 500 | | Inspire11 | 201 to 500 | | Prescouter | 201 to 500 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## What do consulting firms in Chicago do? Business Consulting and Services is a broad label. The most common NAICS codes among them are 541618 (22%), 541611 (19%) and 541613 (12%). **Figure: What consulting firms in Chicago do.** Bars for the share of counted consulting firms with each code: 541618 22%, 541611 19%, 541613 12%, 541614 7%, 541511 4%, 541512 4%, 561110 4%. *Share of counted consulting firms in Chicago by their NAICS code.* [NAICS 541613](https://enrich.chat/naics/541613/)[NAICS 541511](https://enrich.chat/naics/541511/)[NAICS 541512](https://enrich.chat/naics/541512/) ## How big are they? 76% of the consulting firms counted in Chicago have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. **Figure: Size of consulting firms in Chicago.** Seven columns for the share of counted consulting firms in Chicago in each employee range: 11 to 50 76%, 51 to 200 15%, 201 to 500 4%, 501 to 1,000 2%, 1,001 to 5,000 2%, 5,001 to 10,000 1%, 10,001+ 0%. *Share of counted consulting firms in Chicago in each employee range.* ## How old are they? Most were founded in the 2010s (40%), then the 2000s (28%). **Figure: When consulting firms in Chicago were founded.** Eight columns for the share of counted consulting firms in Chicago founded in each era: Before 1960 2%, 1960s 1%, 1970s 2%, 1980s 5%, 1990s 8%, 2000s 28%, 2010s 40%, 2020s 15%. *Share of counted consulting firms in Chicago by the era they were founded in, for the ones that list a founding year.* ## How do you reach the people at consulting firms in Chicago? The people to talk to are usually partners, practice leaders and heads of operations. Build the list in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the consulting firms in Chicago, IL ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the partners, practice leaders and heads of operations at consulting firms in Chicago, IL, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore Other industries in Chicago: [Real Estate Companies](https://enrich.chat/companies-in/chicago-il/real-estate/)[IT Services Companies](https://enrich.chat/companies-in/chicago-il/it-services-and-it-consulting/)[Financial Services Companies](https://enrich.chat/companies-in/chicago-il/financial-services/)[Advertising Agencies](https://enrich.chat/companies-in/chicago-il/advertising-services/)[Software Companies](https://enrich.chat/companies-in/chicago-il/software-development/)[Construction Companies](https://enrich.chat/companies-in/chicago-il/construction/)[Hospitals and Health Care Organizations](https://enrich.chat/companies-in/chicago-il/hospitals-and-health-care/)[Nonprofit Organizations](https://enrich.chat/companies-in/chicago-il/non-profit-organizations/)[Law Firms](https://enrich.chat/companies-in/chicago-il/law-practice/)[Technology and Internet Companies](https://enrich.chat/companies-in/chicago-il/technology-information-and-internet/)[Staffing and Recruiting Firms](https://enrich.chat/companies-in/chicago-il/staffing-and-recruiting/)[Legal Services Firms](https://enrich.chat/companies-in/chicago-il/legal-services/)[Education Organizations](https://enrich.chat/companies-in/chicago-il/education-administration-programs/)[Logistics and Supply Chain Companies](https://enrich.chat/companies-in/chicago-il/transportation-logistics-supply-chain-and-storage/)[Colleges and Universities](https://enrich.chat/companies-in/chicago-il/higher-education/)[Insurance Companies](https://enrich.chat/companies-in/chicago-il/insurance/)[Architecture Firms](https://enrich.chat/companies-in/chicago-il/architecture-and-planning/)[Manufacturers](https://enrich.chat/companies-in/chicago-il/manufacturing/)[Food and Beverage Manufacturers](https://enrich.chat/companies-in/chicago-il/food-and-beverage-manufacturing/)[All of Chicago](https://enrich.chat/companies-in/chicago-il/) Consulting Firms in other cities: [New York, NY](https://enrich.chat/companies-in/new-york-ny/business-consulting-and-services/)[Houston, TX](https://enrich.chat/companies-in/houston-tx/business-consulting-and-services/)[Washington, DC](https://enrich.chat/companies-in/washington-dc/business-consulting-and-services/)[Atlanta, GA](https://enrich.chat/companies-in/atlanta-ga/business-consulting-and-services/)[Los Angeles, CA](https://enrich.chat/companies-in/los-angeles-ca/business-consulting-and-services/)[Miami, FL](https://enrich.chat/companies-in/miami-fl/business-consulting-and-services/)[Austin, TX](https://enrich.chat/companies-in/austin-tx/business-consulting-and-services/)[Dallas, TX](https://enrich.chat/companies-in/dallas-tx/business-consulting-and-services/)[San Francisco, CA](https://enrich.chat/companies-in/san-francisco-ca/business-consulting-and-services/)[Boston, MA](https://enrich.chat/companies-in/boston-ma/business-consulting-and-services/) ## Frequently asked questions ### Which are the biggest consulting firms in Chicago? Among those counted, they include Kearney, Huron, Heidrick & Struggles, Spencer Stuart and Mathco, ranked by headcount range. ### How big are consulting firms in Chicago? 76% of those counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. ### Which companies count as business consulting and services? Companies whose public profile lists Business Consulting and Services as their industry and whose headquarters are in Chicago, IL. ## Try this prompt Find the people at consulting firms in Chicago ```text Use www.enrich.chat to find the partners, practice leaders and heads of operations at consulting firms in Chicago, IL, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Real Estate Companies in Chicago](https://enrich.chat/companies-in/chicago-il/real-estate/) - [IT Services Companies in Chicago](https://enrich.chat/companies-in/chicago-il/it-services-and-it-consulting/) - [Financial Services Companies in Chicago](https://enrich.chat/companies-in/chicago-il/financial-services/) - [Advertising Agencies in Chicago](https://enrich.chat/companies-in/chicago-il/advertising-services/) - [Consulting Firms in New York](https://enrich.chat/companies-in/new-york-ny/business-consulting-and-services/) - [Consulting Firms in Houston](https://enrich.chat/companies-in/houston-tx/business-consulting-and-services/) - [Consulting Firms in Washington, DC](https://enrich.chat/companies-in/washington-dc/business-consulting-and-services/) - [Consulting Firms in Atlanta](https://enrich.chat/companies-in/atlanta-ga/business-consulting-and-services/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)