> 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/it-services-and-it-consulting/ # IT Services Companies in Chicago, IL The bigger IT services companies 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 IT services companies counted in Chicago, IL, the biggest by headcount range include TransUnion, HGS and Indx. They are mostly very small: 67% have 50 or fewer employees. ## Which IT services companies are in Chicago? Among the companies whose public profile lists IT Services and IT Consulting as their industry and Chicago, IL as their headquarters, the biggest by headcount range include TransUnion, HGS, Indx, Intellias and Sphera. Names link to a company profile where we have one. | Company | Employees | | --- | --- | | [TransUnion](https://enrich.chat/company/transunion/) | 10,001+ | | [HGS](https://enrich.chat/company/hgs/) | 10,001+ | | Indx | 10,001+ | | Intellias | 1,001 to 5,000 | | Sphera | 1,001 to 5,000 | | Q1 Technologies | 1,001 to 5,000 | | Quinnox | 1,001 to 5,000 | | Hugo | 1,001 to 5,000 | | Bswift | 1,001 to 5,000 | | Lyra Technology Group | 1,001 to 5,000 | | Devbridge | 501 to 1,000 | | Barcodes | 501 to 1,000 | | Rightpoint | 501 to 1,000 | | Maven Wave, An Eviden | 501 to 1,000 | | Merge By Merative | 501 to 1,000 | | Topbloc | 501 to 1,000 | | Supercharge Lab | 501 to 1,000 | | Marsh Clearsight | 501 to 1,000 | | Aitp-Chicago | 501 to 1,000 | | Salem Tech | 501 to 1,000 | | Crystal Equation | 201 to 500 | | Medix Technology | 201 to 500 | | Codal | 201 to 500 | | Kensium | 201 to 500 | | Ashling | 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 IT services companies in Chicago do? IT Services and IT Consulting is a broad label. The most common NAICS codes among them are 541511 (30%), 541512 (26%) and 541618 (7%). **Figure: What IT services companies in Chicago do.** Bars for the share of counted IT services companies with each code: 541511 30%, 541512 26%, 541618 7%, 518210 5%, 541611 5%. *Share of counted IT services companies in Chicago by their NAICS code.* [NAICS 541511](https://enrich.chat/naics/541511/)[NAICS 541512](https://enrich.chat/naics/541512/)[NAICS 518210](https://enrich.chat/naics/518210/) ## How big are they? 67% of the IT services companies 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 IT services companies in Chicago.** Seven columns for the share of counted IT services companies in Chicago in each employee range: 11 to 50 67%, 51 to 200 23%, 201 to 500 6%, 501 to 1,000 2%, 1,001 to 5,000 1%, 5,001 to 10,000 0%, 10,001+ 1%. *Share of counted IT services companies in Chicago in each employee range.* ## How old are they? Most were founded in the 2010s (48%), then the 2000s (27%). **Figure: When IT services companies in Chicago were founded.** Eight columns for the share of counted IT services companies in Chicago founded in each era: Before 1960 0%, 1960s 0%, 1970s 1%, 1980s 2%, 1990s 8%, 2000s 27%, 2010s 48%, 2020s 14%. *Share of counted IT services companies in Chicago by the era they were founded in, for the ones that list a founding year.* ## How IT services companies compare - 62% were founded in 2010 or later, against 54% across other cities on this site. ## How do you reach the people at IT services companies in Chicago? The people to talk to are usually delivery, IT and sales leaders. 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 IT services companies 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 delivery, IT and sales leaders at IT services companies 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/)[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/)[Consulting Firms](https://enrich.chat/companies-in/chicago-il/business-consulting-and-services/)[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/) IT Services Companies in other cities: [New York, NY](https://enrich.chat/companies-in/new-york-ny/it-services-and-it-consulting/)[Houston, TX](https://enrich.chat/companies-in/houston-tx/it-services-and-it-consulting/)[Austin, TX](https://enrich.chat/companies-in/austin-tx/it-services-and-it-consulting/)[San Francisco, CA](https://enrich.chat/companies-in/san-francisco-ca/it-services-and-it-consulting/)[Dallas, TX](https://enrich.chat/companies-in/dallas-tx/it-services-and-it-consulting/)[Atlanta, GA](https://enrich.chat/companies-in/atlanta-ga/it-services-and-it-consulting/)[Miami, FL](https://enrich.chat/companies-in/miami-fl/it-services-and-it-consulting/)[Los Angeles, CA](https://enrich.chat/companies-in/los-angeles-ca/it-services-and-it-consulting/)[Washington, DC](https://enrich.chat/companies-in/washington-dc/it-services-and-it-consulting/)[Plano, TX](https://enrich.chat/companies-in/plano-tx/it-services-and-it-consulting/) ## Frequently asked questions ### Which are the biggest IT services companies in Chicago? Among those counted, they include TransUnion, HGS, Indx, Intellias and Sphera, ranked by headcount range. ### How big are IT services companies in Chicago? 67% 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 it services and it consulting? Companies whose public profile lists IT Services and IT Consulting as their industry and whose headquarters are in Chicago, IL. ## Try this prompt Find the people at IT services companies in Chicago ```text Use www.enrich.chat to find the delivery, IT and sales leaders at IT services companies 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/) - [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/) - [Software Companies in Chicago](https://enrich.chat/companies-in/chicago-il/software-development/) - [IT Services Companies in New York](https://enrich.chat/companies-in/new-york-ny/it-services-and-it-consulting/) - [IT Services Companies in Houston](https://enrich.chat/companies-in/houston-tx/it-services-and-it-consulting/) - [IT Services Companies in Austin](https://enrich.chat/companies-in/austin-tx/it-services-and-it-consulting/) - [IT Services Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/it-services-and-it-consulting/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)