Campbell-Ewald is one of the largest advertising and digital communications agencies in the United States, with almost $2 billion in annual billings. The company currently has over 30 clients. Campbell-Ewald has offices in Los Angeles, Washington D.C., and San Antonio and has its headquarters in Warren, Michigan, just north of Detroit. The agency currently has over 1,100 employees. They are the agency behind campaigns for Kaiser Permanente ("Thrive"), The U.S. Navy ("Accelerate Your Life"), Alltel Wireless ("Come and Get Your Love"), and Chevrolet ("The Heartbeat of America", "Like a Rock", "An American Revolution"). They are part of the Interpublic Group of Companies.The agency has a long-standing history in the Detroit area and is approaching its 100th anniversary in the advertising industry. In 1911, Frank Campbell and Henry Ewald merged their individual Detroit companies to form Campbell-Ewald, beginning with just six employees. Chevrolet became the agency's first major client in 1919, and by 1922, Campbell-Ewald was awarded all of General Motors' ad business. The agency has continued its partnership with GM for more than 90 years, while diversifying their client base into the government, health care, retail, technology, and many other fields. Campbell-Ewald became a part of the Interpublic Group of Companies (IPG) in 1972 to further its influence and recognition in the industry.
In April 2010, GM moved Chevrolet ad works to rival agency Publicis Worldwide, ending a 91-year relationship with Campbell-Ewald.