> 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/architecture-and-planning/ # Architecture Firms in Chicago, IL The bigger architecture 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 architecture firms counted in Chicago, IL, the biggest by headcount range include Perkins&will, Scb and Studio Gang. They are mostly very small: 83% have 50 or fewer employees. ## Which architecture firms are in Chicago? Among the companies whose public profile lists Architecture and Planning as their industry and Chicago, IL as their headquarters, the biggest by headcount range include Perkins&will, Scb, Studio Gang, Sumac and Adrian Smith Gordon Gill Architecture. Names link to a company profile where we have one. | Company | Employees | | --- | --- | | Perkins&will | 1,001 to 5,000 | | Scb | 201 to 500 | | Studio Gang | 51 to 200 | | Sumac | 51 to 200 | | Adrian Smith Gordon Gill Architecture | 51 to 200 | | Wight & Company | 51 to 200 | | Bkl Architecture | 51 to 200 | | Fitzgerald | 51 to 200 | | Legat Architects | 51 to 200 | | Hartshorne Plunkard Architecture | 51 to 200 | | Antunovich Associates | 51 to 200 | | Site Design Group | 51 to 200 | | Dxu Architects | 51 to 200 | | Lcm Architects | 51 to 200 | | Bailey Edward | 51 to 200 | | Muller2, Now Gft | 51 to 200 | | Chicago Roof Deck & Garden | 51 to 200 | | Building Blocks | 51 to 200 | | Apa Water And Planning Network | 51 to 200 | | German Consulate General | 51 to 200 | | Turley Architects | 51 to 200 | | Adam Beck Architects | 51 to 200 | | Blocks | 11 to 50 | | Main Street America | 11 to 50 | | Turf Architectural And Interior Acoustics | 11 to 50 | 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 architecture firms in Chicago do? Architecture and Planning is a broad label. The most common NAICS codes among them are 541310 (33%), 541320 (14%) and 541410 (14%). **Figure: What architecture firms in Chicago do.** Bars for the share of counted architecture firms with each code: 541310 33%, 541320 14%, 541410 14%, 236220 10%, 238160 5%, 326130 5%, 327390 5%. *Share of counted architecture firms in Chicago by their NAICS code.* [NAICS 541310](https://enrich.chat/naics/541310/)[NAICS 541320](https://enrich.chat/naics/541320/)[NAICS 541410](https://enrich.chat/naics/541410/)[NAICS 236220](https://enrich.chat/naics/236220/)[NAICS 238160](https://enrich.chat/naics/238160/)[NAICS 327390](https://enrich.chat/naics/327390/) ## How old are they? Most were founded in the 1990s (28%), then the 2010s (22%). **Figure: When architecture firms in Chicago were founded.** Eight columns for the share of counted architecture firms in Chicago founded in each era: Before 1960 12%, 1960s 3%, 1970s 2%, 1980s 17%, 1990s 28%, 2000s 12%, 2010s 22%, 2020s 4%. *Share of counted architecture firms in Chicago by the era they were founded in, for the ones that list a founding year.* ## How architecture firms compare - 83% of architecture firms in Chicago have 50 or fewer employees, against 71% across other cities on this site. - 25% were founded in 2010 or later, against 54% across other cities on this site. ## How do you reach the people at architecture firms in Chicago? The people to talk to are usually principals and operations 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 architecture 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 principals and operations leaders at architecture 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/)[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/)[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/) Architecture Firms in other cities: [New York, NY](https://enrich.chat/companies-in/new-york-ny/architecture-and-planning/)[Los Angeles, CA](https://enrich.chat/companies-in/los-angeles-ca/architecture-and-planning/)[San Francisco, CA](https://enrich.chat/companies-in/san-francisco-ca/architecture-and-planning/)[Seattle, WA](https://enrich.chat/companies-in/seattle-wa/architecture-and-planning/)[Denver, CO](https://enrich.chat/companies-in/denver-co/architecture-and-planning/)[Boston, MA](https://enrich.chat/companies-in/boston-ma/architecture-and-planning/)[San Diego, CA](https://enrich.chat/companies-in/san-diego-ca/architecture-and-planning/)[Dallas, TX](https://enrich.chat/companies-in/dallas-tx/architecture-and-planning/)[Philadelphia, PA](https://enrich.chat/companies-in/philadelphia-pa/architecture-and-planning/)[Portland, OR](https://enrich.chat/companies-in/portland-or/architecture-and-planning/) ## Frequently asked questions ### Which are the biggest architecture firms in Chicago? Among those counted, they include Perkins&will, Scb, Studio Gang, Sumac and Adrian Smith Gordon Gill Architecture, ranked by headcount range. ### How big are architecture firms in Chicago? 83% 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 architecture and planning? Companies whose public profile lists Architecture and Planning as their industry and whose headquarters are in Chicago, IL. ## Try this prompt Find the people at architecture firms in Chicago ```text Use www.enrich.chat to find the principals and operations leaders at architecture 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/) - [Architecture Firms in New York](https://enrich.chat/companies-in/new-york-ny/architecture-and-planning/) - [Architecture Firms in Los Angeles](https://enrich.chat/companies-in/los-angeles-ca/architecture-and-planning/) - [Architecture Firms in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/architecture-and-planning/) - [Architecture Firms in Seattle](https://enrich.chat/companies-in/seattle-wa/architecture-and-planning/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)