> 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/detroit-mi/advertising-services/ # Advertising Agencies in Detroit, MI The bigger advertising agencies headquartered in Detroit, MI, with what they do, their sizes and how to reach their people. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** Among the advertising agencies counted in Detroit, MI, the biggest by headcount range include Gtb, Commonwealth Mccann and Onemagnify. They are mostly very small: 80% have 50 or fewer employees. ## Which advertising agencies are in Detroit? Among the companies whose public profile lists Advertising Services as their industry and Detroit, MI as their headquarters, the biggest by headcount range include Gtb, Commonwealth Mccann, Onemagnify, Wolverine Solutions Group and The Outloud Group. Names link to a company profile where we have one. | Company | Employees | | --- | --- | | Gtb | 1,001 to 5,000 | | Commonwealth Mccann | 501 to 1,000 | | Onemagnify | 501 to 1,000 | | Wolverine Solutions Group | 201 to 500 | | The Outloud Group | 51 to 200 | | Gstv | 51 to 200 | | Detroit Together Digital | 51 to 200 | | B4b Connect | 51 to 200 | | Motorcity Digital Marketing | 51 to 200 | | Lafayette American | 11 to 50 | | D Cal | 11 to 50 | | Atomic Honey | 11 to 50 | | National Lgbt Media Association | 11 to 50 | | Echo Media - A Marketing And Branding Agency | 11 to 50 | | Driven Creative Supply | 11 to 50 | | Combustion | 11 to 50 | | Milo | 11 to 50 | | Clicktivated Video | 11 to 50 | | Socialproof Marketing | 11 to 50 | | The Guerrilla Politic | 11 to 50 | | Campus Commandos | 11 to 50 | | Saga Mktg | 11 to 50 | | The Greening | 11 to 50 | | Blvd Content | 11 to 50 | | Brophy | 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 advertising agencies in Detroit do? Advertising Services is a broad label. The most common NAICS codes among them are 541810 (40%), 488999 (20%) and 541613 (20%). **Figure: What advertising agencies in Detroit do.** Bars for the share of counted advertising agencies with each code: 541810 40%, 488999 20%, 541613 20%, 541890 20%. *Share of counted advertising agencies in Detroit by their NAICS code.* [NAICS 541810](https://enrich.chat/naics/541810/)[NAICS 488999](https://enrich.chat/naics/488999/)[NAICS 541613](https://enrich.chat/naics/541613/) ## How big are they? 80% of the advertising agencies counted in Detroit 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 advertising agencies in Detroit.** Seven columns for the share of counted advertising agencies in Detroit in each employee range: 11 to 50 80%, 51 to 200 11%, 201 to 500 2%, 501 to 1,000 4%, 1,001 to 5,000 2%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted advertising agencies in Detroit in each employee range.* ## How advertising agencies compare - 80% of advertising agencies in Detroit have 50 or fewer employees, against 71% across other cities on this site. ## How do you reach the people at advertising agencies in Detroit? The people to talk to are usually agency owners, account 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 advertising agencies in Detroit, MI ``` ### 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 agency owners, account and operations leaders at advertising agencies in Detroit, MI, 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 Detroit: [Nonprofit Organizations](https://enrich.chat/companies-in/detroit-mi/non-profit-organizations/)[Real Estate Companies](https://enrich.chat/companies-in/detroit-mi/real-estate/)[Hospitals and Health Care Organizations](https://enrich.chat/companies-in/detroit-mi/hospitals-and-health-care/)[All of Detroit](https://enrich.chat/companies-in/detroit-mi/) Advertising Agencies in other cities: [New York, NY](https://enrich.chat/companies-in/new-york-ny/advertising-services/)[Los Angeles, CA](https://enrich.chat/companies-in/los-angeles-ca/advertising-services/)[Miami, FL](https://enrich.chat/companies-in/miami-fl/advertising-services/)[Chicago, IL](https://enrich.chat/companies-in/chicago-il/advertising-services/)[Atlanta, GA](https://enrich.chat/companies-in/atlanta-ga/advertising-services/)[San Francisco, CA](https://enrich.chat/companies-in/san-francisco-ca/advertising-services/)[Austin, TX](https://enrich.chat/companies-in/austin-tx/advertising-services/)[Dallas, TX](https://enrich.chat/companies-in/dallas-tx/advertising-services/)[Houston, TX](https://enrich.chat/companies-in/houston-tx/advertising-services/)[San Diego, CA](https://enrich.chat/companies-in/san-diego-ca/advertising-services/) ## Frequently asked questions ### Which are the biggest advertising agencies in Detroit? Among those counted, they include Gtb, Commonwealth Mccann, Onemagnify, Wolverine Solutions Group and The Outloud Group, ranked by headcount range. ### How big are advertising agencies in Detroit? 80% 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 advertising services? Companies whose public profile lists Advertising Services as their industry and whose headquarters are in Detroit, MI. ## Try this prompt Find the people at advertising agencies in Detroit ```text Use www.enrich.chat to find the agency owners, account and operations leaders at advertising agencies in Detroit, MI, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Nonprofit Organizations in Detroit](https://enrich.chat/companies-in/detroit-mi/non-profit-organizations/) - [Real Estate Companies in Detroit](https://enrich.chat/companies-in/detroit-mi/real-estate/) - [Hospitals and Health Care Organizations in Detroit](https://enrich.chat/companies-in/detroit-mi/hospitals-and-health-care/) - [Advertising Agencies in New York](https://enrich.chat/companies-in/new-york-ny/advertising-services/) - [Advertising Agencies in Los Angeles](https://enrich.chat/companies-in/los-angeles-ca/advertising-services/) - [Advertising Agencies in Miami](https://enrich.chat/companies-in/miami-fl/advertising-services/) - [Advertising Agencies in Chicago](https://enrich.chat/companies-in/chicago-il/advertising-services/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)