About MCI USA

MCI USA (formerly Coulter Companies) helps companies and associations to strategically engage and activate their target audiences, building the dedicated online and offline communities they need to strengthen their brands and boost their performance.

Headquartered in the Washington, DC area with offices in Baltimore, New York, Dallas and Miami, we are proudly recognized by the American Business Ethics Awards as one of the top companies in the United States for vision, leadership and integrity. 

Through the merger of MCI and Coulter Companies in 2015, MCI USA serves as the United States platform for the largest global provider of strategic engagement and activation solutions. This union results in a workforce of more than 2,100 professionals in 60 cities and 31 countries, accelerating MCI’s ability to work global and deliver local to senior influencers and decision-makers in associations, corporations and governments.


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